Harry's LapTimer Petrolhead App Reviews

VERSION
24.8.2
SCORE
3.8
TOTAL RATINGS
136
PRICE
$19.99

Harry's LapTimer Petrolhead App Description & Overview

What is harry's laptimer petrolhead app? Harry's LapTimer is the advanced tool for car enthusiast. It records all types of sensor data provided by your iPhone/iPod/iPad (or external sensors), combines them, and makes them available to optimize your drive. Over time, you will get insights on your car and in your driving, not known before.

LapTimer offers more than 1300 predefined tracks world wide. With its assistants, it is extremely easy to setup - just click your track and drive. It fully automates your lap timing using GPS, and presents the results to all kinds of media.

You are not limited to track driving only. For example, you may define your home and working locations as a 'track', collect statistics on different ways chosen, and analyze / optimize the time used every day.

Want to show your drive to your friends? LapTimer Petrolhead and above generates beautiful in car video recordings with all kinds of data overlaid, ready to be presented - e.g. on youtube. Even without video, recorded data can be analyzed using purpose designed views, making it easy to analyze and improve your driving performance.

Using online racing, you can use LapTimer in competition. LapTimer offers a Hall of Fame, allows watching you and your friends on track - all in real time. Compare your sector times, braking / acceleration points, and learn from each other.

You can start with your plain iPhone in the beginning and add external GPS and OBD II sensors later, step by step, and as you need it. LapTimer itself comes in three different editions: LapTimer Rookie is the entry level with all you need for lap timing; LapTimer Petrolhead is the advanced version including lots of video features, and LapTimer Grand Prix is the edition for professionals including Multi Cam recording, Health Kit integration, and advanced sensor and analytics functionality.

Please note that functionality depends on your device, the LapTimer edition chosen, and sometimes even external sensors added (like OBD II). Please visit our web page to get the full story. All edition can be upgraded later, all editions come with native iPhone and iPad support.

There are quite expensive stand alone solutions for track days available. Be smart and own the leading edge tool simply by using your iPhone and LapTimer. Besides the professional area, there is no known solution that offers more functionality than LapTimer does - across the market. As our ambition is to offer the best tool, LapTimer is enhanced continuously.

Please visit http://www.gps-laptimer.de for detailed information on versions, FAQs / documentation, in depth technology background information, online racing, and supported device configurations. Join our user community on http://www.gps-laptimer-forum.de to be involved in future development - all with first class support.

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App Name Harry's LapTimer Petrolhead
Category Sports
Published
Updated 29 June 2023, Thursday
File Size 77.94 MB

Harry's LapTimer Petrolhead Comments & Reviews 2024

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Amazing App with Equally Good Support. I am indeed an admitted Petrolhead, and as such, was looking for a way to get data displayed on my GoPro videos of track days. I cannot believe there is any app better than this one. The richness of this app continues to surprise me. Tying devices together like an OBD II plug, external GPS, GoPro Hero3 camera, is no easy feat. Granted some of the features are a bit difficult to find, but they are there. I feared when rendering an overlay onto a 2GB GoPro video on my iPhone 5, but the stability of the app is top notch. Great job, Harry! I'm now a big fan and will evangelize this app to my Petrolhead friends!!

Marginally Useful. I had high hopes for this program and after playing around with in in the car on city streets I was ready to give it a go. Taking the laptimer out onto the track I quickly started to find a flaw not with the software but with the ability to track sate-lights fast enough to be useful. Beyond iphone limitations the software gives very little analysis and exported files are all but useless on a mac which can only utilize the google earth files (again interesting but not helpful). I will continue to use the program for the one feature which seems to work consistently and thats tracking lap times (thats it, just the time of the lap). Everything else is seriously lacking, for example my last lap for the day: purported 63 miles on a 2 mile course, averaged speed of 146 mph with a max speed of 110 and a 5180 ft elevation change (thats about 1 mile vertical over a 2 mile course). The phone was set with an unobstructed view of the sky and mounted on the seat behind the driver and the error seems to be with ghost points or skipped points, perhaps later software developments can overcome the limits of the phone, but I have my doubts. So.. if you need an accurate laptimer this will work, but if you need something more... your going to have to look outside the ap store.

Use To Be Good Updates Don’t Work. This app use to be pretty good but now they have not kept up with new phone operating systems and seems like this app has run its course. I just did an event at Sebring and none of the data works. The lap anylasis screen freezes up and forget about seeing your video or overlaying data. None of this works anymore!!! On Harry’s Laptimer Facebook page all these screen lock up freezing issues are noted but it’s also mentioned there is no fix. They mention a work around but that really doesn’t work due to screen freezing and app completely locking up. Beware do not waste your money or time with this app.

One of the best apps to show off all the capabilities of the iPhone platform. Apple should use this application in their iPhone launch events. It's amazing how many features can be compacted into a single application. In the past I would have had to spend thousands of dollars and a bunch of non-commodity hardware to get all these capabilities. An iPhone and Harry's Lap Timer gives me everything I need to record my track days. Every driver I've showed it to has purchased the app and if they didn't already have an iPhone bought one. Amazing product at a great price.

You'd have to pay at least $1000 to get this performance otherwise.. Harry's lap timer pro is more than just a toy. I am an autocrosser, and use Lap Timer Pro as my primary data acquisition tool. I am using it with an Emprum 5 Hz GPS dongle and a WiFi OBDII reader (generic Chinese PLXII knock-off). The total investment in hardware accessories and software was about $180. The tool does what you'd have to pay over $1000 for otherwise (Traqmate, Race Technologies DL1 etc). It works very well, with lots of features including data export to many formats and video overlays to iphone video and external video source. Service is spectacular (you talk with Harry directly, and he solves problems usually within 1 day). Updates and bug fixes come constantly, along with new features. That being said, there are a few negatives. Reliability when connecting to the GPS and WIFi unit could be improved. I've found a procedure that works, though. The app is not happy if you get it going, quit or put it in the background and then come back without reconnecting the external devices. I am now in the habit of reconnecting the GPS and wifi every time I start the app, which works well. Also, if you're somewhere hot, the iphone can overheat and go into shutdown. There are some tricks to mitigate this. I live in Phoenix, though, which is as bad as it gets. Even with these issues, Harry's Lap Timer is an astounding value, and a real showpiece for what is possible with iphone apps.

Awesome Support. I've been using this for a few months, its always within 3 tenths of a second of the official time when using a transponder and thats with the built in iPhone 4 GPS. A friend who has the TomTom always gets within 1 tenth accuracy. The developer is very helpful in helping setup new tracks, and there is a software update every few months with new features, this is the app to get for timing!

The #1 accessory you can get to go faster on the track!!. I kid you not- as a weekend track addict (I try and do about 6-8 weekends a year) I find Harry's Lap Timer to be the best investment I have made that has made me improve my times! Being able to capture consistent data points, sector/lap times and being able to overlay video (with MultiCam support of GoPro!) allows one to see where they are doing well and where one can improve. My favorite things about the app: * support for OBDII sensors * support for external GPS * support for multi cameras (iPhone, iPad and GoPro cameras) * in-device support for overlaying multiple videos, data points from sensors on to track map * ability to set a Reference lap and compare all other laps to it Only a fellow track addict can develop such an app - and it shows how well it's been written!

Great for weekend racing - test locally first!. This is a great app - I've used it for over a year and it gets better and better with every [free!] upgrade (v17 due any day). I've recommended it to a dozen others who also love it. One watchout - get to know the app BEFORE any real road/track event. It does take some simple experimenting to get it right. Thats not to say there is something wrong with it...just like anything else, learn how it works. The best part is you can easily and automatically "make a track" anywhere (parking lot, the block around your house) to check out how it auto starts/stops, overlays, etc... And use that opportunity to try different mounting positions in your car and how it works. I have a windshield mount and use the front camera, and a rollbar mound but use the "reverse" camera in that view (so I can press the buttons). It is not 100% perfect (nothing is), but for just $20 versus $$$hundreds...how can you compare?!?

How do I get my money back. I want to return this. Where’s the “give me back my money” button? So frustrating.

Makes it so easy. I beta tested this version for Harry. Integrating the OBD data makes doing lap videos with overlays a touch of the button. I use 2 blue tooth devices (GPS and Go-Point) and even use GoPro Hero2 video. Integrating with GoPro video is as simple as syncing on the end of the lap, and HLT does the rest. GForce maps tell me where I can go faster, and where I"m inconsistent on my lap segments Resident maps have worked at every track Ive been to in Ontario, Canada, and only adjusting for stop/go for the timing trigger is the only thing I need to do Others have reported issues in making the automatic triggers work and video recording. This version makes it easier to setup, so you should have less issues. Once you get used to it, and experiment with setup off the track, its a breeze. Highly recommend. Integrates a lot of what I want. Now if only Harry will create a data logger app so I can view engine performance on the track with GPS markers, life would be grand!

THE app to have for track days, period.. This seems expensive for an iPhone app, but you're basically turning your iPhone into a $1000+ racing telemetry unit. I haven't tried the video overlay function yet, but if it works as advertised, (and by all reports, it does so quite well...), you're getting the equivalent of a $2000+ system. Kind of a no-brainer. Costs roughly gas money for half-a-dozen laps around my home track. If I had ANY complaint at all, navigation through all the various feature menus is a touch confusing -- but I think that's mostly because this thing is so crazy packed with features that it's hard to organize all of it into a logical format. If you look back at all the version releases, it keeps doing more and more. If he adds any more features, it's liable to drive the car for you! Phenomenal app. If you've got an iPhone and even do one HPDE/PDX/Track Day, you should have already downloaded this thing...

Could not get it to work.. Attempted to log lap times at ButtonWillow raceway. Would not recognize the track, and app kept crashing. Worst $$$ spent

Yet to make it work properly. I must be the idiot in the room, because I've yet to get this app to record a single clean lap. I've tried it 5 times now at Infineon, Pacific Raceway, and The Ridge and it fails every time. Before each event, I spend about 30 min refreshing myself on the instructions, installing any updates, and trying to figure out what caused the previous failure. After each event, I come back to find zero laps recorded, or sometimes a few ridiculously fast laps on the order of a few seconds. I find the interface extremely clunky. I get lost in the sub menus, and there doesn't seem to be any indication when it's set up properly and ready to go. For instruction, I mainly resort to online tutorials, or wander around the pits trying to find and get advice from other users. I get many different walkthroughs, none of which seem to work. At this point, I've decided to throw in the towel, and delete the app. I wish I would have tried the cheaper version first before wasting more money on this one. If you're the multi-tasking type that is capable of messing with their phone as they race, then this might work fine for you, but the claim that you can set it and forget it has been totally false in my experience.

An exceptional app. With the introduction of The Assistant, LT Pro is truly easy to use -- load your track ( hundreds already in the database) and start driving. Version 14.2 appears to have corrected a glitch that had some sessions recording as one long lap. I ran over 100 laps at GingerMan Raceway in South Haven, Michigan, without even the slightest hiccup. I have not yet figured out how to review and interpret all the data (my off season project), but I have been able to focus on the time for each individual lap as well as the maximum speed on each straightaway and the minimum speed for each turn. Comparing lap to lap has given me attainable goals that have helped me noticeably improve my times. In addition, I moved my equipment into a very fast driving friend's car and recorded laps that are about 6 to 8 seconds faster than my best time, allowing me to better understand the speeds that can be reached in order for me to establish additional targets. Very helpful and fun. I use an iPod Touch, second generation, and the TomTom Car Kit. It takes less than a minute to set it up for timing. A truly sophisticated app that has saved me many hundreds (if not a thousand) of dollars for comparable information from much more expensive systems. Thank you Harry for your time and continuing effort.

Awesome app, cannot beat the features. I've been using various editions of Harry's for 3 years and have maybe 200 laps recorded at various track days. Let me say that this app has done wonders for my driving. Compared to just using a camera this gives you hard data about speed and cornering forces, and the camera gives you the line that you took. I consider this a must have for anyone serious about doing track days or autocross events. It does take some time to get familiar with and find the perfect mounting location for your phone, but once you get familiar with it the app is no more intrusive than a video camera when leaving the pits. Plus this app is being very actively developed, so I feel confident that the money I spent won't be wasted.

not worth a pinch of ****. if i could give this app zero stars, that would still overrate it. it failed repeatedly during today’s track session. finally gave up and put my phone away. there’s &20 totally wasted. hopefully this will keep other drivers from wasting their money on this worthless app.

How did you that?..... ...is the reaction I get everytime I show a track day video with overlaid data from this app. Really amazing what you can do with an iPhone. Do yourself a favor and play around with this *before* you get to the track. If you try to set it up for the very first time 15 minutes before the call to grid, it can be too much to take in. One of my favorite tracks (ORP) has very spotty cell service, so you need to have the track downloaded and selected before you get there. App works well as is with just a mount and a power cord, but I've enjoyed adding a BT-1 OBDII link, a Dual GPS puck and an Olloclip wide angle lens to improve data capture and cockpit video.

Awesome app - incredible support!. I have been using this app, along with an external 5Hz GPS (XGPS150A). Lap times reported by HLT are within 1/100 of a second of my transponders. This app is so feature rich, I'd easily pay double the price. Best of all, Harry offers the best support I've ever experienced. He answers all my dumb questions. He's reconfigured tracks (direction) for me within minutes. He's always available on his forums. I guarantee no other track app is as feature rich as HLT, nor has the customer support to match Harry's.

Unbelievably great. I’m completely blown away by the features and functionality of this app, and the documented support. There are so many things you can do with it, an incredible array of supported accessory devices, and with all the complexity available there is documentation and online support that makes it easy to work with. Best value it track software out there.

Powerful but utterly confusing interface. I setup video recording and proceeded to do laps in a cup car this weekend, with all indications that video was recording, and perhaps due to a wrong keypress the video did not save. It did capture lap times and other data. The last thing you need in the seat is to wonder what is the app doing. Needs a printed manual.

Incredible App and better developer. With so many apps out there, and so many developers just out to make a buck, it was incredibly refreshing to come across this add and developer! This is an awesome app for anyone that rides on a track, with cars, or with motorcycles as I do. Most of the most popular tracks were already in there, and adding your own track, then uploading it so others could use it was very simple. More importantly, aside from it being packed with features, the developer was super responsive! I emailed him asking him if he could add a 'motorcycle' icon to the app for us riders, and wihin a month an updated version was released with it. Incredible! I highly recommend this to anyone looking for a much more cost effective alternative to a lap timer, and it has so much more!

Amazing value!!!. This app packs an amazing punch in terms of features and ease of use. To put it in context, I have used other dedicated data logging and lap timing equipment for track use, and they are expensive costing many hundreds of dollars - even thousands, and are extremely complex to use. By contrast Harry's is extraordinarily easy to use (once you figure it out) and so cheap it's free by comparison to the alternatives. But it's a MUST to get an external GPS antenna for reliability and accuracy. The Emprum is great and has 5 Hz update, and the TomTom car kit is also a great improvement with only 1 Hz. Figure spending about $100 on GPS and windscreen mount. Still far cheaper than the alternatives. And the video recording and data overlay is great. The support is also great with quick responses and frequent updates. Enjoy!!!

Extremely capable laptimer. Harry‘s Laptimer is a very capable performance analyzer. Video and GPS based analysis with that much flexibility is unparalleled on the iPhone. I recommend to visit his website for the excellent user‘s guide as the app can seem intimidating at first. Excellent support from the developer is also available through the forum there.

Very professional. This application is Excellent!. We are using it with our team in a national single marque championship, and the difference with the official timing was +- 0.03 seconds. Using this software, we are preparing next race curve by curve, trying different strategies and analyzing the resulting diagrams (lineal/lateral acceleration, speed, etc). We include our track in 5 minutes using google maps, and it works immediately! In my opinion, it's a "must have" for any professional racer.

Incredible application, even better customer service. Been a user for few years and it’s quite honestly one of the best lap timer solutions (and not just among mobile apps). Other professional setups will cost you over $1000 when you factor in hardware but this app will fine on its own give you nearly same level of data acquisition. Best of all is Harry’s dedication to the community. He personally responds to all troubleshooting requests despite the majority of questions being repeat asks already covered in his FAQ and provides regular feature updates to the software. Anyone complaining about user difficulty didn’t spend the 5 mins to read the user guide.

unreliable. This app never works at the track when it's time to go. I had such high hopes for iphone data logging. This app has been one of the most disappointing components of the entire process. I can't call support when I'm at the track. It would be nice if the app store allowed refunds.

Amazing track app!. Amazing track day app! Works flawlessly and easy to use. Accurate timer, useable data and always evolving. Plus, Harald provides awesome customer support.

Incredible app! Worth 10x the price!. I have used Harry's Laptimer since back in the Palm OS days. It has been amazing to watch this app go from the most basic "Laptimer" to a comprehensive timer, data logger and video capture and overlay program. Just the basic timer functionality alone is worth the price of the app. If you are doing DE's or track days, this app is a must have! Some people have reported issues, but I suspect user error and marginal equipment are the main issues. For example, the app won't work from the pocket of your jeans. The author strongly recommends using an external gps to improve the signal quality. Harry has bent over backwards to help me in the past and is very responsive. Also, if you are having issues at the track, seek out another user. It is highly likely that there is a Harry Fan that will be willing to help!

You can’t beat it. I’ve been tracking Porsche’s for years. I’ve had $1000 systems such as Traqmate but that’s no longer sold and windows only support is tough. Porsche Track Precision app is terrible but HLT is super reliable. I use an external BT GPS and a BLE ODB adapter. Overall you just can’t beat HLT for cost to realizability to being able to dig into data. My only wish is if I could find 991.2 GT3 custom PID info for brake pressure and ESC like the Porsche track precision app. Thank you Harry for continuing to improve an already amazing app. PS I use the Grand Prix in app upgrade, worth every penny.

Conditionally not working. Yeah. Nothing works at Thunderhill here in Northern California. I Requested my money back and no response. Can’t even review how good it works if it doesn’t even record where I am. Checked all setting for gps and location but nothing worked. I’ll invest in a Garmin or something real.

Upgraded to Grandprix through the app... still isn’t working with external camera. Followed instructions to get go pro footage for overlay. Isn’t working. App is buggy and crashes on iPhone X. Too bad. Cool features but poor performance.

Worst interface ever. The most irritating thing is that this seems to be the best app for this sort of thing. The user interface is some sick, cruel joke. The app locks up from time to time. The list of tracks truncated the useful information (Buttonwillow clockwise vs counter clockwise). The settings are impossible to understand. The problem is, if you can get it set up and working the results are brilliant. The overlay of the track map, accelerometer and speed over video are great. Unfortunately, you can't hit a button to automatically overlay ever lap, you have to manually go through and overlay each one. Adding insult to injury, the overlay settings are reset every time you go in to overlay, so you have to remember every time to reset the lead in and out to zero and disable that stupid count-down thing. Trying to load maps is an excercise in frustration. First of all, I'm usually near a track when I want to load it, why not show me the nearby tracks? When tracks nearby have variants, the most important part of the track name is the part that differs (for Thunderhill, is this with the bypass or without? For Buttonwillow, is this clockwise or counter clockwise?). The track list shows the names and truncates the interesting bits. Tapping on the track usually results in loading the details page instead of loading the track.

Works very well especially if paired with a 5 Hz external. I used it for the first time at Road Atlanta a couple of weeks ago. I went ahead and shelled out the $90 for the xgps150 external receiver so i would have 5 Hz update rate and the accuracy was very surprising. Yeah it's a little annoying that the video only captures every other lap but Harry says that is addressed in v15. The data overlay is pretty cool and helpful when you go back through your laps. You just enter the track and hit video and it starts automatically. It did miss a lap or 2 but for the most part it worked as described. I tried to use it at an auto cross this weekend but I only got it to work on one lap. I am going to assume I wasn't doing something correctly. I just couldn't get it to start, just said it was waiting to start. In fairness I didn't have my windshield mount or the xgps so it was probably due to poor gps signal. Anyway, in summary it's the best $18 you can spend for track time.

Just superb. I have a "real" GPS-based lap timer, costing far, far more than Harry's Laptimer, but it stays at home when I go to the track these days - Harry's Laptimer has more functionality, is easier to use (especially when you're harnessed in and need a truly automatic lap timer) and is constantly being developed and enhanced. If you do high performance driving events, track days, etc., you've got to give Harry's Laptimer a try!

Doesn’t work anymore. Can get the track loaded and select drive and no data is recorded. Really bummed because I loved using the app in the past and it always worked great. Tried deleting and redownloading but it still would not record any lap data.

Best Data Acquisition for iPhone. I have been using this app for several versions over the last two years and love it! At first I got the app because I didn't want to spend $1000s on commercial systems that pros use, I'm just an amateur HPDE driver tracking my Vette. So HLT was the next best thing, and it did have some bugs in the beginning (Harry was always very responsive to questions), but the last couple versions have been terrific especially with all the new features that keep being added. The recent version and the next release provide features found on the commercial pro systems for a fraction of the cost. I highly recommend HLT!

Turns your phone into an affordable track data logger.. I have played with this app a few weeks and used at one autocross event using no external add-ons. Worth it in that configuration alone, but I have recently added TomTom kit to see if mapping becomes more accurate. To the reviewer with upside down overlay, rotate the phone so the home button is on the right in landscape orientation. When you hit "video" button you're preview will show correctly.

Great App, Great Developer. This app is one of the most amazing apps available for the iOS platform. The amount of functionality it provides eclipses what you'd expect on a desktop application, let alone a mobile device. Bottom line is, if you want to record vehicle data, either on the track or street, and combine that with video, this app can drive it all. Issues? Harry maintains a great forum for his products and is extremely responsive. The amount he charges for these apps is a complete bargain.

Worst UI of Track Timers Available. Honestly disappointed to see this many users accepting such a subpar product. The user interface is viscously difficult to navigate, and missing key ‘ease of use’ that you would expect with a track tool. Overall, between lost sessions & general frustration with the UI, spend your time/$$ investing in other more reliable timers such as RaceChrono or TrackAddict from HPtuners. There are too many other aspects that require attention on race days to get this fed up with what should be an easy to use app.

Great App! Minor Issues. Videos always seem to be freezing up the app. Other than this, the app is quite good, but having external GPS for accuracy is a must.

Best track app!. I reviewed other versions of this app in the past, and this review is going to be more of the same praise. Harry's GPS Lap Timer provides as comprehensive a solution as the iphone can handle, performing much of the same functionality as the vastly more expensive dedicated timing solutions, requires virtually no setup at the track, and just flat works! Used the Petrolhead version at Indy Motor Speedway this past weekend (my 7th event this summer), and impressed my garage-mates with the timing and video the app produced. Additionally, I had a question over the weekend that I posed to Harry; he responded very quickly, and I was up and running for the next session. Brilliant app and fantastic customer service!

Best app out there for a weekend racer. To say this app is anything less awesome is insane. In my opinion this has been the best purchase I have made from the App Store. The app itself has helped me to become a better driver at autocross events as well as hpde events at the local race track. It allows you to overlay data from sensors you have plugged into your car or phone that help create videos that blows my friends and family away. I highly recommend this app to any weekend racers out there. You will not regret it.

Pricey but worth it. At close to 20 dollars this is a very expensive app, but considering what it can do I think it's well worth it. If you are a hardcore racer then you'll probably pay the big bucks for the pro equipment but for those like me who just track their car a few times a year, this app is perfect. Just the video and lap timing features are worth the price of admission already. There's still a whole bunch of cool features I don't know how to use yet

Just Does’t Work. I purchased this app for a weekend at Sebring. I wasn’t able to get it to function. There were three other people that had the same app and they had the same problem. How do I get my money back? So disappointed!

Amazing! No trackday junkie should be without it.. Seriously. This app is amazing. If you don't use a timing system on the track, you should. If you don't record your laps, you should. If you have an iPhone, you'd be nuts not to invest in this app, which does just about everything. On my last trip to the track a friend of mine let me try it out. I was already using a camera on my harness bar and a wristwatch strapped to the steering wheel. When he emailed me the video link, I was amazed. The quality, the data... the utility! This beats the hell out anything you're using. It does for track data what the smartphone did for the telephone. But for way cheaper. Plus, the developer seems very active in continuing development... he even gives honest reviews of all accessories that work (or don't work) with the app. Wow.

Not accurate. So I did a track day at Thunderhill and while I wasn’t expecting to break any track records, I was expecting accurate information. It measured my top speed on average 7mph slower than my car instrumentation. I compared to what my GoPro was filming, it was timing my laps over 8 seconds on average slower. I can’t explain how disappointed I was. I guess you get what you pay for. Buyer beware that if you want accurate information, this is not the app for you.

Great App, Every version worth the money. Works great, certain tracks are off a little bit from my transponder time, But that is mostly due to my iPhones GPS. Everything internally works great!

Simple and effective like my stock car!. It works, it’s easy and my friends are all amazed at the telemetry data it displays while recording video.

A+++++. One of the best apps I've downloaded on my phone. Has endless features and Harry is always actively engaging with users on the laptimer forum to solicit enhancements/upgrades to the app. I'm a casual HPDE/Autox'er and love this app!

Excellent Application and even Better Customer Support!. I've had this application for about 4 months now, and even since then it has improved quite a lot. Harry provides excellent customer service and implemented my request into the App in less than a month, almost no developers will do that! When coupling this App with the TomTom iPhone GPS module the accuracy is pretty spot on. I use my iPhone + TomTom for data logging, a GoPro Hero for video recording, and Dashware to put it all together. If you want RPM's, Gear Selection, and other internal car data you could also purchase a OBDII Datalogger. Overall I am very happy with my purchase and the price is unbeatable. This is a great solution to use at Autocross or the track! Overall, if you want a cheap solution for data logging look no further - this is THE App to get. While it may not be AS accurate as Traqmate, I'll save the $1000!

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barely ever works. timer barely ever works properly and video is equally bad or worse. on three attempts it says i have recoded video yet the play back function doesnt work. very frustrating when i have now missed recording three full events. such a shame as used to be good 10yrs ago.

Motorsport fanatic. Congratulations that's awesome app

Amazing app!!!. This is an absolutely essential app for the track day junkie and racers of cars and bikes. It gives accurate lap times and extensive data for post race analysis. Easy to use interface and track setup using GPS points set by the user. Supports OBD and GPS accessories for the more serious users. Very good support with constant updates - the developer is implementing what the customers want. This program replicates $1000 stand-alone GPS track timing systems for a fraction of the cost. As a motorcycle racer couldn't have asked for more. 

Harry's Laptimer. This is a fantastic app, i have told 6 pople that i race with about it and they all bought it, it is great, it has also been a good tool to help tune the race car itself, as the data collected helps to find areas of improvment. Best app i have purchased and would recomend it to anyone that goes to the track thats lookng to get more out of themselves and their car, THANK YOU HARRY!!!!

Brilliant. This app really is brilliant. It works much better than expected. The times are within 1 tenth of a sec to a dorian. It can be roughly plot braking points and g forces during laps. Will show racing lines and can record video and overlay it with accelerometer and other data. It is really worth while.

Great tool. This s the best money I have spent on my track day stuff. The lap timing is awesome out of the box and Harry just keeps adding new features. I've added external GPS and ODB interfaces and this adds even more to the data that is captured. Video feature is awesome cant wait to see what he adds next.

Doesn’t work. Not working for me

Club racer essential.. Must have app for track day enthusiast. It’s the Strava of motorsport.

IT nerds only. Absolutely waste of money. Nothing syncs. No useful tutorials. 74 page PDF that makes no sense. You need an engineering degree to get this to work with a simple GoPro.

Ok. I tried this at Broadford (Victoria) didnt work at all....showed laptimes varying form over 4 minutes to 30 seconds!!!! Would need to use with an external gps unit I think..will try at Phillip Island in AUgust hope it works better there.

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Just awesome!. Amazing just getting the hang of it

Amazing App. Thank you so much for putting so much hard work into this app, I use it every time I'm at the track now and it's perfect. Keep up the excellent work please keep those updates coming they are appreciated! Many thanks from Canada!

Love this app!. Buy yourself an external GPS receiver ($99) to get 5-10Hz accuracy and Harry's LapTimer is by far the best value for comparing your laps at the track. You can learn so much about where you lose/gain time on the track. Full HD video with overlays in app are amazing too!

Great timer. Intuitive and informative. Tried this out on my last track day and was impressed with the video and ability to overlay speed, acceleration, and position on track into a final video in a nondestructive way. Can't wait to use it to improve even more

Amazing . Every updates bring fabulous new features. Everthing works flawlessly and amazingly. Great for time attack and lapping peaople and cheaper than driftbox. Kudos from canada. Only downside is we need more track from Canada In database

Great Program. This latest version crashes when overlaying video... I upgraded in app to the Grand Prix version and my best lap overlaid OK but I can't overlay any others, perhaps due to the PIP?

Every update gets better!. I've been using this app for over a year now and it's one of the most well supported apps I own. For anyone doing autocross or any highperformace driving days at a track this app is what you want. I've got over 200 laps at my local track this summer and gigs of synced video. Having this app has help me improve my line through corners and pick up 3 seconds average (2.2km track) which is HUGE.

Promises, does not deliver. Promises camera integration with video overlay. Purchased it for this reason only. Does not control GoPro without purchase of "Gran Prix" Add-on. Bought the Add-on. Does not control GoPro (albeit now saying it does), and does not create the video overlay with the GoPro. I just wasted fifty bucks on an application I'm never going to use because it does not do what it advertises to do. Plus, "Not eligible for a refund"... Awesome! Not...

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Great and simple program. This is an amazingly simple app if you want to time your laps and overlay some basic information such as speed, g-forces and location on track on video. The program skips every other lap, which is acceptable but you may be missing your best lap on video. Otherwise does what it claims. I found it difficult to calibrate on the 3G I-phone, but worked anyway.

Great App !. Tremendous value ! This app is everything from a simple timing device to a sophisticated data logging system with video integration. At a price of $50 it would be a deal, for $15 it's unbelievably cheap. Plenty of support available on the web forum as well as clear documentation.

Great support!. I just made my purchase and have not used it yet. I have heard great things already and am excited to give it a go. I had some questions and was able to get answers back quickly via Facebook. Thanks again for all the help Harry!

Awesome App. Tons of functions, video is great. Ensure you have a charger and lots of storage space to capture laps with this app, amazing capabilities need power and room. Thank you Harry!

Great App … eventually?. Looks to have great potential. Tried it out, but with mixed results. Got another track weekend coming up, hoping for a better outcome.

Poor documentation, not user friendly. Perhaps I have come to expect too much in a consumer facing app these days. For the money this app goes for and the companion iPad app, I expect a much more user friendly app. I'm actually a software developer and amateur racer. Based on all the reviews I thought I could figure out how to use this app. Wrong. I have been playing with this on the iPad 2 and iPhone 4s for over two hours and can't get it to work. Harry's documentation is lacking and leaves much to be desired. I feel foolish for shelling out 40 bucks (ipad and iphone app) for an app I can't even use.

Nice app but needs some improvement. Amazing what this app does on a mobile platform. Competitive with data acquisition systems that can cost $1000s for casual users. UI is a little dense and could use a redesign. Manual video capture start/stop is problematic. Easy to accidentally hit the start button twice canceling. Also, you can't cancel the long 'send video to photo app.' Just hangs for me.

Frequently at the track!. I love this app. but the last update messed everything up! Please fix so I can keep using it every time I go to the track! Please fix update!!!

Not working. I have now spend hours to get this app to work, every now and then it won't record video, and when it does it won't overlay track times, speed etc. The timer works fine but that's about it, I've tried it at Barber and Road Atlanta same problems. Don't buy this app, just go with the cheaper version, this pro version is not worth the money.

Awesome lap timer. I use this app to review my autocross runs during every event. The video with overlay is valuable info and very cool to watch! This app is a big factor in why I switched to iPhone. Works great with the recommended Dual XGPS150a, although an occasional reboot of the iPhone and GPS is needed, I think the external GPS is at fault but can't say for sure. Keep up the updates and great work.

On the Track. I use this at Sebring and it is incredible. Captures excellent data, takes great video, overlays statistics on the video and is outstanding with the TomTom iPhone holder for attachment to the windshield. Could not be more satisfied...and a real bargin when compared to the hardware alternatives. Also, very easy to set up and use.

Lots and Lots of Fun with Great Support. Had some user related errors on my part, but this thing is fantastic fun! With the addition of a GoPoint OBD device it gets even better. The learning curve isn't very steep though some patience is required, at least on my part. However, if you have any questions the support on the forum is exceptional…no, outstanding! I think Harry has a few clones because responses to questions and troubleshooting via forum is instantaneous. Thanks Harry!

A must have app for those getting into MotorSports!. A great easy to use app for those getting into MotorSports! Very accurate when used with an external GPS!!!

Its great when it works.. But it does rarely do its job. More bugs than a Motel 6!! And every update adds more of them. Have the app on the 6plus. Everytime i want to record the app crashes in the middle or just when i want to turn it off after the run. Im first time at sonoma with ZERO footage after trying to record for a full track day. It crashes and restarts the whole phone way too often. I cant erase videos because it crashed immediatly if i go in the housekeeping screen. It also crashes right after overlapping a video "succesfully".. If the app wouldnt be all that buggy it would be great.

Works great!. Yesterday was the first opportunity I had to really try this app at a Track Day. The download of the specific track worked perfectly. The video-capture and overlay worked perfectly. The GPS timing/accuracy was close to that of the readings from a $300 professional Lap Timer that was run simultaneously. I particularly like the video and speed, G's/angles, track-progress, split timers. Wow, it's great. One of the more expensive apps I've downloaded, but well worth it! Notes: Used on an iPhone 5. The windshield bracket I chose is not heavy-duty enough to prevent rattling -- will need something better next time.

The most frustrating app I have ever used. Let's see: Awful interface, very unstable, exceptionally difficult to use, inaccurate, full of bugs, overly complex, expensive. These are some adjective that describe the app. Only one tutorial that is available online that is both outdated and useless. Great idea for an app awful execution

Best Bang-for-the Buck. Hands down, the best bang-for-the buck in data systems. Well worth the price of admission... even if you have to purchase an iPhone.

Get it!. Simple and elegant interface that allows non-geeks like me to see and do better on-track! Worth every penny (and more!), and such a treat for track dogs like us!

Add track. Need to add Phoenix international raceway(PIR)...and firebird international raceway, the east and west track to your add ons list...you have already motorsports ranch near Tucson....alot of autocross and club racing takes place at firebird and NASA az region races at PIR...

Great app. This is both the most expensive app and the most impressive app I own. Harry had created something better than most expensive professional telemetry systems that cost $$$. Times using GPS, records videos, produces professional looking videos with overlaid data, all from one app. Highly recommend to maximize your fun at your next track day or auto cross. Happy driving!

issue with deleting a lap & mph display only in a few spots. I'm very happy with the app overall but when I delete a lap from the lap list it stays deleting forever, I have to exit the app and close it. Also I would like to see my mph in more spots of the track not just the ones it chooses to show me, I'm using homestead miami speedway if that is of any relevance.

Great product! Need a brain to use it... The basics work super easy and it's fantastic. The custom stuff and more advanced features come with a learning curve. The developer is very active on the forums as are other users which is another bonus! I've used it with success on 3 tracks and just created my first custom/road set to test out.

I am delighed. Laptimer is a very good piece of software for road racing enthusiast. With combination of iPhone 4S and tomtom cradle it makes one powerfull telemetry solution. So easy to use. I found myself not using my hdhero anymore. Now to fix the slight speed delay in the video overlay and its absolutely perfect.

Great App. Awesome application. Great customer service. I asked Harold to add two tracks and he did in less than 24 hours. Highly recommend. Best application. This app is better than any overpriced standalone. I basically bought an iphone for this app and it hasn't dissapointed. Kudos to Harold. If you a track person this is a must have.

Racer. I have used this app at two different Colorado tracks. I had some set up issues but Harold was very responsive in helping me. My friends have some different apps and I think this is the best one.

Must have for track. I have used Harry's since January and have zero complaints. Every time I go to the track and show people how easy it is to create videos q

Must Have Track Day Companion. This app does it all and a must have for any track day. Forget spending up to $1000 for a GoPro camera and data acquisition system then spending an hour integrating video with data. This does it all. An external gps mount is recommended for greater accuracy.

Great app. I have recently started tracking my Corvette and needed a way to see if I was improving. I asked around and found out that several people were using this app. I purchased it and have loved it since.

Great App. I was looking for a data acquisition tool with video. Thankfully I found this app before spending the $1,000 for similar features. Adding recommended GPS dock while not required was a great addition. I would buy this again. NASA SCCA & PCA member.

Amazing app!. This app records video of track sessions and then can export with overlays of track location, speed, etc. Worth the price for this feature alone. Everything else us like a free bonus.

One the best apps on my iPhone. Great work on keeping the app up to date and always adding useful features. 🚗💨 👍

Best timing app on iPhone. Best timing app on iPhone. Took a little time to read the online manual and forum will help you saving time setting things up at the track. This is the best timing app for iPhone hands down.

Outstanding. On par with much more expensive systems and easier to use.

Awesome app. Does what it says and does it well, video is very sharp! Amazing what this can do for so little money.

Two thumbs up!!!. I just tried this app during a Grand-Am test at Road Atlanta and I'm shocked and how well it works and how user friendly it is. This is my profession and I would recommend this app to anyone!

GREAT APP, wish i found it earlier. Some issues with missing data, but makes beautiful video with overlay !

Very Good Application - Great Support. The support was so good that Harry helped me fix a problem with my windows install!!!

Fantastically Useful App. I rely on this app for all track day events and it works extremely well. I have been pleased with all the telemetry and the ability to control my GoPro for 2 camera overlay video. Just be sure you have a mount that allows for good ventilation because your phone will get hot. I use one with "fingers" and even in 100+ weather the phone keeps running with video being recorded.

Perfect. Easy to use and an excellent way to take a second look at what you did on the track!

Great for big track, nearly useless for AX. App always works great at tracks like Auto Club Speedway--times very close to official times, records every lap no prob. Very sporadic for AX--records laps arbitrarily, sometimes it works, other times inexplicably not recorded. I wouldn't pay $20 for it unless u track alot.

Amazing. This app is absolutely amazing. It does much of what a $1000+ hardware installation in the car would do but for a fraction of the cost, and with the quality of the iPhone 4s video it may be even better. It is also a great example of what the iPhone is capable of. Thanks!

Data!. Love this app. I'm just an occasional track goer, but this app gives me so much data. It did crash on me at the track, but the author took the time to repair/recover all my data for me. 👍

Great value!. I can't believe all the functionality built into this $15 app. Easy to use. I love it.

Excelent product. I am a race car fan and I drive my 911 at some DE's here in Houston, I was introduce to this app in the track several month ago and I love it. Have of the people I know now are using it even a friend of mine that did not like the iPhone (his wife wante to have iPhone) since I show him this app now he love the iPhone this is a very good app for any amateur driver thanks for the wonderful work

Awesome. Great app. Used it at Summit Point with Tom Tom car kit with outstanding results. Convinced another guy to buy it and he got good results without the external GPS. great support response time (<24 hrs) when I asked about multiple lap comparison and exporting for video overlay. Watch for new. updates. Can't beat it for the price

Great app, great support on forums.. Been using Harry's LapTimer Pro since June '11. Love the software and inexpensive compared to some of the other products for just autocross. New update just came out making this easier to set up for autocross. Thanks Harry!

Great lap time tracker. Used it for the first time this past weekend and loved it. Only thing I would recommend is the ability to pause the time keeper or create sessions since everytime I clicked stopped when I came into the pits, I had to load the map again to start time keeping which was an extra step I don't think we should have to do.

5 stars, great app. I'm really enjoying getting to use Harry's. Lots of features and ability. I strongly recommend this app to anyone who enjoys track time.

Best Use of an iPhone ever. This combines every feature you could want in a track app using the iPhones sensors and cameras- beautiful video too

I envy those of you who get to utilize this program as intended. I never write reviews for apps, but I'm astonished at how much thought and care Harry has put into this. I don't even race, but after poking around GPS Buddy and reading the LapTimer documentation, I bought it out of sheer respect for how well implemented everything is. The support appears to be direct, personal, and helpful from Harry himself. Super impressed in general.

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Harry's LapTimer Petrolhead 24.8.2 Tips, Tricks, Cheats and Rules

What do you think of the Harry's LapTimer Petrolhead app? Can you share your complaints, experiences, or thoughts about the application with Harald Schlangmann and other users?

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Harry's LapTimer Petrolhead 24.8.2 Apps Screenshots & Images

Harry's LapTimer Petrolhead iphone, ipad, apple watch and apple tv screenshot images, pictures.

Language English
Price $19.99
Adult Rating 4+ years and older
Current Version 24.8.2
Play Store com.harrys.LapTimerPro
Compatibility iOS 12.0 or later

Harry's LapTimer Petrolhead (Versiyon 24.8.2) Install & Download

The application Harry's LapTimer Petrolhead was published in the category Sports on 24 November 2009, Tuesday and was developed by Harald Schlangmann [Developer ID: 307688601]. This program file size is 77.94 MB. This app has been rated by 136 users and has a rating of 3.8 out of 5. Harry's LapTimer Petrolhead - Sports app posted on 29 June 2023, Thursday current version is 24.8.2 and works well on iOS 12.0 and higher versions. Google Play ID: com.harrys.LapTimerPro. Languages supported by the app:

EN FR DE IT JA ZH ES ZH Download & Install Now!
Other Apps from Harald Schlangmann Developer
App Name Score Comments Price
ROUSH Lap Timer Reviews 1 1 $27.99
Harry's LapTimer Petrolhead App Customer Service, Editor Notes:

- Added support for Racebox Mini S - Added an Expert Setting to adjust the number of minutes recent fixes are displayed in Map View

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Find on this site the customer service details of Harry's LapTimer Petrolhead. Besides contact details, the page also offers a brief overview of the digital toy company.

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