Decibel X PRO: dBA Noise Meter App Reviews

We transfer money over €4 billion every month. We enable individual and business accounts to save 4 million Euros on bank transfer fees. Want to send free money abroad or transfer money abroad for free? Free international money transfer!

Crashes. Crashes way too often. Paid 4.99 for the pro hoping that would resolve the issue but it didn’t.

Peak hold feature needed. Good overall decibel meter. The “peak” shown on the main screen appears to be an average peak measurement, which works for many tests. If the app offered the ability to switch between displaying a peak hold line or average peak line it would be even more useful. With the peak hold feature you could run several scans of the environment or test subject and display peak sound level vs the full audible frequency span. Quite useful if you want to characterize the peak response of a speaker across all audible frequencies. As of now the only way to see the full frequency peak line is to record the phone screen, replay the average peak pink line as it sweeps frequency, and manually record sound level at each frequency. The built in recording feature doesn’t show sound level amplitude on the Y axis and you can’t export a video of the recording, thus the need for screen capturing. Skypaw, when can the peak hold feature be added?

Simple function - amazing app!. For something as simple as showing current dB level this app does an amazing job of showing a great UI with tons of options and features on how to use and display the data. Best dB app out!

Why is app crashing on start?. As I’ve seen one other review with the latest upgrade since December 2018 the app is now crashing at start up. I have tried many times like five or 6+ times and it does not start. I am using a iPhone 6S with latest IOS version. I have reported it with an email and have yet to hear a response. The other reviewer states should we just burn this bridge or is the developer you send an update to fix this. I hope the developer wakes up and resolves this. Anyone else have these issues please notify developer. Other than that I would like to write this is a five star app!!! Has been a great app for a couple of years.

THE best app. I’ve tried 4 other meter apps. None compare. How much is your hearing worth?! Let me rephrase... is the price of this app too much $ for a lifetime of hearing damage?!!! So many tools to choose from... camera, meters, guides. All on this app. Easy to use... Nice job developers!

Camera mode crashes the app... FYI. I’m a music and Theatre teacher, and just attended a conference, one session was on the need for hearing protection for music teachers. I panicked, bought some cheaper earplugs for the time being, set an audiology appointment, and purchased this app. I’ve only played with the app, for a few minutes and noticed that on the camera setting the app crashes. Seems like the developer is very responsive though, and is why I went through purchasing the app. Fyi: I’ve played on my piano for just a few minutes and was shocked that I can easily push my piano about 95 decibels! Yikes! Guess, I’m glad I purchased the ear plugs... and the app.

Needs serious work. Was at a concert last night and took some pictures showing the measured dB. I was extremely disappointed when I found out the pics weren’t automatically saved to my photos. What’s the point of taking pics if you have to manually choose to save the pics?

Real volume feedback. This app allows me to give real time feedback to my students on their volume level during a performance. I like that I can take a photo and attach it to their assignment as proof.

Great App!. This app is full featured and worth paying for. I’ve used it in reviewing sound levels for zoning issues and it has proved quite accurate.

Better than ever. I’m just a hobbyist, so I don’t need extreme accuracy. That said, previous apps I’d tried didn’t seem accurate, and compared to a handheld (actual) sound meter, usually weren’t. When I found the non-Pro app, it seemed spot on, and while the ads were ever present, they weren’t annoying (unlike another app that lets you use the trial version for 2 minutes and then stops working and puts up a “buy me” screen with an almost invisible close button). But after using the “free” version for a while, I decided this was worth it. I’ve been enjoying the new features such as the frequency charting feature. Pretty cool seeing what frequency the drum beat is, or why band X seems so much louder despite being a lower decibel reading (more sound closer to 1500 Hz vs 300 Hz).

Update: Opens now (re: Can’t get it to open). One more update: Developer just reached out to me to tell me the crash problem is fixed! Changing to five stars! Absolutely awesome customer service! **older review** Below is my old review. I couldn’t get it to open anymore. So I deleted the app and re-downloaded and now it opens. I’m loving the app. Hoping it doesn’t start crashing again **oldest review** iOS v12.1.2 So far I can’t get this to open. It crashes before it opens. I hope I can edit the review once this is fixed.

Proved my point. I got this app to measure noise from my upstairs neighbors to prove to management how loud they are. Did exactly what I needed it to do! Now I’m a bit obsessed and often find myself measuring the dB levels around me. Great little app.

Really helped. We tried to track noise levels (in our restaurant) before and after acoustic baffles were installed. It helped quantify our improvements... thanks

Solid sound meter app. Solid app. Great features. Easy to use. Only thing missing in my opinion is the screen doesn’t flip. Only adjusts 90 degree turns. Would be better if 180 adjustments were available.

Number one app. I install sound systems in Harley’s and have been using this app for a year or so. I calibrated it with a local bands measuring meter and was surprised it needed very minor adjustments. And no problem with ADDS. Also don’t know if it matters but I am using a iPhone 7 No BS it works great

Neat app / needs bugs fixed. With IPhone: App crashes when you try and change view from classic or try to use camera. I’ve had to several times uninstall and re-install. There were lots of free ones, but chose this assuming things would stay up to snuff for a paid APP. Fingers crossed, We’ll see.

Very intuitive to use - Recommended. Seems accurate although I have no way to verify. But I think it’s in the SPL range of what I expected while listening. It’s of course consistent internally, and from song to song. It’s my Go - To among my several apps of this type.

It keeps aborting. I bought the Pro because I wanted to record a few “background” sounds that — with my new hearing aids — sound so much louder (coffee maker, a/c, fans, water, etc. I’m returning soon to get so my hearing aids adjusted and thought these recordings would help. But after saving a recording, the program aborted. And aborted. And aborted. Every time I went back in, it just ended. I was finally able to get it to stay open to record once again, but after each recording it would abort again it was a minute or more before it would stay open. I’m not impressed. But I’d like to be.

Great. My slow WiFi up in the woods didn’t download all the features on iPad at first, weird. When I drove to town my iPhone got the recording data features and when I got home they were on the iPad too. So ignore my 4 star review wishing they had more features. :-)

Works and Looks Great on iPhone XS Max. Time to change my rating: The latest update fixed the App and it’s now working as it used to on the iPhone XS Max and iOS 12.0.1. Great App! Old Review: Decibel X Pro does not display properly or work on iOS 12 on the iPhone XS Max. Hopefully, an update is not too far off! My rating will change if or when corrected.

Great noise monitor. I occasionally need to monitor noise levels at home or in classrooms when I’m substitute teaching. So I’m a novice at this, although I am a scientist in other areas. This APP does everything I need: records noise levels, lets me adjust the parameters, such maximum acceptable noise level, and I can download the data. It defines & explains everything. It is calibrated. The only thing it has no effect on is my 4 cats’ level of meowing. If only it could feed them.... I’m thrilled with this APP!

Fantastic app; Analyst friendly. This is a fantastic app! For someone who works in OSHA hearing conservation the ability to take a photo with the metadata alone is worth the price. Being able export the data to a table is great! The only recommendation I can give would be to include, in the setting, options to customize the metadata for your csv export and camera, specifically, a time stamp (DTG) and frequency, and location that way we can isolate harmful frequencies and conduct a more thorough analysis.

A useful tool. On fast mode it’s pretty good at detecting sounds your ear cannot, leaks in systems, failing bearings. I hope in an update the orientation is enhanced. When I attempt to point the microphone at the source for better location the screen only goes as far as landscape. I would also like to switch between different settings to compare without having to go into a separate settings screen interrupting my work.

Newest version. I have used the app for quite awhile but the newest version that I just installed on my new iPhone 11 has a 15-20 second delay for the sounds to be registered on the meter and graph. I was hopeful that a setting would correct this but so far nothing corrects that. I hope that the developer is aware of this and can correct it in the next release.

Decibel X Pro review. Meets all the expectations I had after upgrading from the free version. Sure, more accurate equipment exists and the version may not use beam-forming mics available on the newer iPad Pro, but a. this is adequate to many tasks b. it records & the record can be emailed from the app c. it runs n a pice of equipment you probably always carry d. the cost—the cost—the cost cannot be beat.

Very useful.. Great to have in order to understand level of noise environment. Proves a device to evaluate various noise levels of products being considered for purchase

Fun and good. I have advanced ear training and worked in studios for a few years. I am by no means an expert but I’m more than an enthusiastic hobbyist. THAT SAID. Love this app. Helps w my new party trick called How Many DBs Are We At Right Now. I don’t go to a lot of parties. Great app.

Latest iPhone Version. I’ve been using this app for a few years and it’s never let me down ... until now. The app is useless on my iPhone X now. Since the latest update, the app crashes upon launch. If I repeatedly relaunch the app I may get lucky after 5 or 6 attempts to launch. Yet after it finally opens its unstable if I switch to a different app and usually crashes as well. Contacted support, 2 weeks ago and there has been no response. Hope someone is reading these reviews because I’d really like to know if I should burn this bridge and find another solution.

Excellent. I’m very pleased with this app. I have one small suggestion: I would like to see the app start in Pause mode instead of Record, or perhaps offer this as an option. Thanks!

Perfect for my purpose. This app has been really useful. It helped me understand ambient noise in my music room. It helped me understand what I can and cannot hear (generally.). And it helped me select cooling fans for a new PC build.

Almost 5 stars — every now and then a crash. This one helps me protect my nerve-damaged hearing. If it weren’t for the occasional crash, I would give it five stars. My other nit-pick applies to this and other decibel apps: they all report marginally to significantly different levels in the same environments. I’d love to know which is most accurate. Decibel X Pro, though, is easily my favorite. I like the interface, the ability to record, and the quick and easy-to-read comparisons to noise levels in various environments.

Love!!. This is so much fun, even if you don’t know what you are doing. It is a great learning tool. The camera filters are absolutely the beat! I’ve tried several other apps, but this one is by far my favorite! I wish I could record the actual sounds in addition to the decibel levels.

The info you need!. Fantastic app. Measures loudness, shows average exposure and remembers peak levels. For those spaces where you know the sound levels are too high, now you have some evidence. Warning: people like loud music, especially after they’ve already damaged their hearing. Be prepared to enter a new level of diplomacy!

Video lacking. This seems like it could be a really good app. The problem I have is I cannot turn the phone upside down (mic is at the bottom) to take video while holding the phone upside down to avoid hands being near the mic. Also can’t turn it sideways. Some bugs on the video function cause crash as well. Hopefully they add this functionality.

Good but has a few bugs.. I use this app for training and assessing vocal intensity for Parkinson's patients. There are 3 problems that need to be fixed. One is the data on the summary report doesn't fit on the "page" so the numbers are hard to read. The second problem is that when data is cleared, it immediately starts recording again and the pause button has to be hit quickly. And finally, even the slightest upward swipe (always on accident) flips you into a different screen which is annoying and disruptive.

Settings crash - fixed. Update: They have fixed the issue and it works well now. Running 10.3.3 on 6+ and you can't change anything in the settings menu without it crashing to the home screen.

Just downloaded this app. I just downloaded this app and it closes as soon as it starts up. I have an iPhone XS Max, 256 gb storage running iOS 12.2, apple’s latest version. Fix this app or refund the purchase price ASAP. Despite what the developer says or claims, this app was not corrected or fixed as it disappears as soon as the app comes up but stays in the background. When you flick the bottom of the phone screen you can see it but as soon as you lift your finger off the screen it disappears again. What a frustrating piece of crap this app is. If my credit card gets charged for it I will take it up with my card issuer so the charge is removed from account. Should that fail I will file a complaint with the NYS attorney general office as well as the FTC. Yes I am that po’d by this app. This is the first one that I bought where this happened.

Great but crashes. I have an iPhone 7 Plus with latest iOS and this sometimes crashes every time I try to open it. If I delete and reinstall it, it works again for a while. One thing it seems is if I change the theme it will crash right away and I have to reinstall again. Otherwise it’s a great app and I use it at work which is occupational health.

Got Rid Of Best Map?. Why would you get rid of the best map you had that showed the decibel level changing over a period of time? Who had the genius idea to do this? Or is the new map you put in its place broken? The Y axis shows decibels but it showing double what the decibels are. So 40 dB is showing up as 80.

Next to my D👀k and my Brain, my Ears are my Favourite Organ.. 03NOV2018, I went to a Nine Inch Nails Concert in San Francisco, CA. The warm up act was playing so loud that it showed 122db Z Weighted!!! That is INSTANT Hearing Loss!!!👂 wearing my Ear Plugs under my shooting muffs, that only dropped the sound level 6db or to 117db Z Weighted or Permanent Hearing 👂 after 20 seconds. I ran outside and during the break, confronted the sound crew, showing them the data and demanding the lower the volume else I’ll call OSHA and shut down the tour!!! The dropped it to 105db because of your program!!! Later that week, I got a room upgrade due to noisy neighbours and I got a seat 💺 upgrade because the engines were too loud. I am PROUD to be a HEALTH-NAZI (for fun and profit) and you can be TOO!!!

Best app for Decibel monitoring. This app is impressive. It works very well for OSHA reports. I checked it with my professional sound calibration device and your app was 99.9% accurate with my iPhone 7. I just recommended it to my friend who is an audiologist with a private practice (he is a doctor).

Noise Monitoring (Saving data). I love the app but it would be better if it had auto save feature. It’s possible it does but I can’t find it. I monitor noise over time and if the battery dies or someone messed with my phone, I lose the recording and have to start over.

It is simple and works. I got this ap because the screen shot shows sound pressure levels on an octave chart and a historical graph. I wanted to record this spectrum, or at least capture averages for each octave, but it turns out it only plots the average. It does show instantaneous octave bands.

Great tool. Used this for mixing sound at church. We have some folks who want the sound to be louder due to hearing loss. Used this app (Pro version) to show what the levels are and made everyone happy without touching the mix. Made my life much better!

Works as advertised. Apps should work as intended. The science and tech in this one does. I haven’t had the equipment to test or adjust its accuracy but it appears to be correct out of the box. I recommend it.

Nice App. I’m not sure of the accuracy of these types of apps but I like to use it at work. I’m a generator technician and I like to see the dB rating of different generators. This app is easy to use and offers a quick assessment.

Best SPL App I’ve Used. This is the best SPL meter app I’ve used. Well worth the purchase. The only suggestion I have is that it doesn’t rotate 180 degrees on the iPhone XS Max like it did on my old iPhone 6. I like to have the microphone at the bottom of the phone pointed at the speakers so to have the UI flip upside down was very useful. Also the “email support” button in settings didn’t work when I pressed it. Hence my notes here. Otherwise it’s great and I use it in the theater everyday when setting up for a screening.

Now fixed on iOS 12 & iPhone Xs!. [Update: latest version now works as expected—thanks!] Opens to the graph completely full screen with no controls. Labels much too small to be read. Request for help from developer unanswered. In other words, a total waste of money. Caveat emptor.

No horizontal meter view w/ iPad Mini 2 & No Support. This a 5-star app undermined practically by two things: There is no apparent way to have the decibel meter viewable when my iPad Mini 2 (iOS 12.x) is horizontal. That is, the decibel meter and frequency graph visible in vertical mode reduce to graph only. Horizontal view allows placing the iPad in a more stable position, especially when in a supportive keyboard style case. And second, the Support page to contact the developers about this never loads. I will upgrade this review when the developers fix these.

Great App, when you think things are too loud. You are in a Bar or a Pub and you think things are too loud. You can prove it with this App. I have found most Pubs are at 90db or above. I have used it to have the management lower the music sound.

Did you know that you can earn 25 USD from our site just by registering? Get $25 for free by joining Payoneer!

Crashes on open. Doesn’t work.. This app crashes as soon as it loads on my iPhone XS and IPad Mini. I reported it to devs. Still not fixed, so now here’s your 1-star review. I’d recommend not downloading until this crash is fixed.

Crashes all the time. Very hard to view data and transfer out data. Plus crashes every time you want to view your data

Pretty decent. Seems to work well but definitely needs to be able to flip 180. Fingers crossed it comes out in a future update.

Good except one thing. Great sound meter but would be great if the screen would rotate 180 degrees when turning the phone around to point in the direction of sound. Sound is obstructing the mic input in instances when holding the phone, this feature is on other sound meters so would put the icing on the cake for this to happen.

Excellent tool. Useful for OH&S documentation. UPDATE 19/12/18 update now crashes on launch every time. Was 5 star rating before, now useless until fixed. UPDATE 24/1/2019 Crash on launch now fixed. 5/5 rating restored.

Decibel X Pro. Quite a nice app Seems to recognise an external microphone - essential for serious calibration Annoying features: Can not rotate screen with iPhone so have to use display upside down Uses DBA not dBA Uses Ave not LEQ Would also like to fine tune location with my own words tried to contact makers No reply so far

THEY DONT WARN YOU BEFORE CHARGING $5.99. Do not trust!

Handy app. I use this app to measure sound made by my generator so as not to anoy the neighbours. I recommend this app to everyone. Don

Would be 5 stars if.... ...the apple watch app stayed visible longer.This app is great when playing outdoor bar gigs. I can walk out into the audience and just know that the duty manager is not going to have a high reading on his meter because we’ve already adjusted to stay within limits.

App now crashes loading and have no screen. App crashes on iPhone X

Nice. Decent sound meter. There’s some UI issues such as, when in dark theme, the main top nav bar is still in light grey, the Done button in settings truncated when changing to the dark theme, and in general some of the button icon choices are unintuitive. Functionality wise it’s good for my needs, although I’d love to have a video recording option rather than just a photo option. Being able to record a video with live histo overlay and dB level would be much more useful than a static photo to me.

Latest version won’t run. I have used it for some and it is a good app. Last update won’t run on my iphone xs. Can someone help me please?

Noise. Very good to find noise sources.

Comparison to sister app gives complete different readings. I compared to their other app which is also $8 and has ads. Both give totally different readings. Wasted $$$

FFT and dB meter. Overall this app is ok. Please improve the readability of the frequency scale on the FFT as it’s hard to read (colour of frequency numbers and dB on scale to dark to read easily). The print out snap should include FFT as this is important information and why I bought the app. Camera function on mine seems to crash iPhone 6

Db sound meter. I am unable to open dB sound meter. It flashes on when selected but disappears straight away. Very disappointed with this app.

Craig. Wotta great unit. So handy

Measure of sound energy. Love this app. Helps me decide to wear hearing protection or not. Give feed back to my surroundings when appropriate.

Imagine you at your best. All the time. Picture yourself at your sharpest and most productive. Your most alert and focused. Your most lucid, creative and confident. At work. At play. In every area of your life. Add Mind Lab Pro® v4.0 to your daily routine and uncap your true potential. Buy Now!

Broken app. The newest update is broken. With new iOS latest version would not even start ?????? When switching to modern view the app fails to open.

Annoying pop ups. Even though I paid for it, it still constantly shows me the pop up to go and rate it. So I’m rating it one star since paid app shouldn’t be constantly interrupting workflow to show pop ups multiple times a day. Just stick with the free version since it’s equally annoying.

Averaging. How are the averages calculated? In the Z weighting if each level in the Xcel is of equal time duration then it should be a simple average equation of adding the dBZ and dividing by the total number of recordings. The octave band is poor in that the frequencies and SPL are difficult to read. More explanations required.

dBC. Serait il possible d’inclure aussi des mesures en basses fréquences ?

Pining for a review. Ok, this app continues a pop up to rate it. Done!

It works. It works well.

Update 6.6. This update does not work on iPhone 8

Sound meter. Us it to demonstrate how noisy venues are.

Camera crashes. I love this app I did some research and reading reviews so I got this app someone says the camera crashes or takes him out and development says it’s fixed but unfortunately is not . I got this app cause of of the cam so I can save the pictures for clients and I can’t unfortunately. Pls fix the camera crash asap

Modern Dark Theme Causes Crash. Excellent and fun utility. Pro version allows saving recordings. But changing from classic theme to modern dark theme just crashes the app. Will give it 5 stars when that is fixed.

Works well!. I have it on my iPhone and iPad. Amazing how well it works. And it keeps getting better with updates.

App shuts down when taking a pic. Keeps shutting off

Iphone6. Ne fonctionne pas sur iphone

dB(A). This is one of the best apps for my use. Calibration data (externally) vs this device are unbelievable repeatable. Daniel. NB: What about a personal Audiometer test device for yourself ??

Great for a casual user. I mainly use in stores which have extremely loud music with mega distortion and crappy speakers. Provides great feedback to give to the offending store. I like options the app gives me especially the screen shot. Many thanks!

Buggy. It’s not a bad app but very buggy. The dark mode, which is the nicer skin for the app makes it crash repeatedly. Must be fixed !

Nicely done.. I like the layout and information provided by this app. Easy to use. It works on iPhone 8 Plus with iOS 11. I compared the results from this app with a digital sound level meter and they were close most of the time. The settings on the digital sound meter were : Response=Fast and Weighting=C.

Works very well. App works very well and does all it claims to do. Only gave it 3 stars because of the advertising in it. App is worth the cost of the paid version so upgraded to be free of the advertising. Now it pesters me to rate it. I am now rating it. If it continues to pester me I will delete it.

Documentation. I would like to find documentation, technical documentation, on the theory piloting this instrument. Thank you.

Ok. Ok

Great app and nice interface. Work perfectly and provide accurate result to the limit of the iPhone microphone. Recommend for general purpose and mostly for the compact and usability to used it anywhere without traveling with pro equipment.

Adsterra is the most preferred ad network for those looking for an alternative to AdSense. Adsterra is the ideal choice for new sites with low daily traffic. In order to advertise on the site in Adsterra, like other ad networks, a certain traffic limit, domain age, etc. is required. There are no strict rules. Sign up!

Video bugs. I see video ability is still really buggy, and it still won’t take landscape full screen videos with DB overlaid. Hopefully that can get resolved. I’m surprised more people aren’t needing or see the need to take a video of what is making the sound.

App keeps crashing. I'm running iOS 10.3.3 on an iPhone 6. Whenever I try to modify any of the settings, such as change from the default Z weighting to A weighting, the app crashes.

EHS Professionals Benchmarking Friend. This is an incredible app for spot checks and real-time notations with location references (pictures) for future assessments and employee communications. Simply a must-have...

One missing thing. landscape view would be appreciated.

Easy to read. Visual display is functional. Easy to read .

Great app for accurate information. I used this at work to test the noises of cnc machines. I also was curious with road noises of my new aggressive tires. Before and after.

Fixed. Bug was fixed that was causing it to crash. Works well.

Meter option not presented. I have tried to install this app several times on my iPhone X’s and all I am presented are the 4 histogram views. I do not see the meter presentation as shown in the examples. Looks like a great app if I could see the meter option and other documentation which is supposed to be part of the application

Simple to use. I like simple to use, not too many bells and whistles

Awesome sound measuring app. Awesome sound measuring app and I highly recommend this app

Need NC rating. I have been looking for an app that can provide the NC rating of a space. This app does everything else really well

Sound. Great app very helpful for our business which is the trade shows

Won’t load. Worked well until this latest update, now it won’t load. Upon attempting to open, the screen flickers, then nothing. Hope it’s fixed.

Such a Great App!!. This app does what I needed it to do, and loads more, and it looks FANTASTIC while doing it. You will not be disappointed.

The Perfect SPL. I’ve recorded my subwoofer on this app and I swear it was accurate. I would recommend this app for if someone is in a car with loud bass!

Great app. Takes people’s opinions out of the discussion. And there is always a discussion

Db. This is a very useful app, especially when checking audio in church, my home studio,etc. Thanks

To those having trouble -. Uninstall and reinstall gets it working again!

Awesome!. Elegant, everything a professional needs, as well as anyone interested in how sound looks and feels...a must in this day and age of sound pollution!

Great App. Previously wasn’t working but new update made program work again.

App UI does not display. Purchased on an iPhone XS Max. The UI from the example images does not display. App frequently crashes. It does show a decibel readout but the font is tiny and difficult to read, and functionality is very limited. I have emailed support twice since last week with no response. Very disappointed and do not recommend.

Worth it! Good App!. Don't have much experience with this but the app does what we need it to & does it well to check volume inside our haunted attractions.

Doesn’t Work. App crashes on startup in iOS 12.1.2

Nice App. The Apple Watch version worked. Now it doesn’t. Just displays zero. Can you fix? Thanks

Broken with iOS 12. The UI is unusable with iPhone XS and iOS 12: all controls are gone, the only thing visible is a bit of the graphs. Wrote an email to developer, no acknowledgment so far. Was great till iOS 12. Revised: the app now works with XS. So five stars again.

Modern Dark theme crashes App. For those wondering, if you had the modern dark theme enabled, your app will crash. A temporary fix to this would be to redownload the app and leave the classic theme on. Until the developer comes to fix this, we will be stuck with this for now.

New Update Crashes. I really enjoyed using this app for many different uses. However, since the last update it crashes as soon as it starts up. I’m about to bail and find another app. No response from developer when contacted either. Pretty salty about spending money on this, only to have it be a waste. Running on latest IOS on 8+.

Crashes. Worked fine when downloaded, then the next day-crashes, open app and it immediately closes. :-(

New update = Fixed. Developers seem to care and fix issues quickly

Really good tool, the sound level key isn’t easy to find.. The application would be much better if it if the graphs had more ability to see / find the decibel key.

Thanks for bug fixes. Updating review after bug fixes

Waste of money. This super overpriced app is missing lots of basic features and doesn’t record correctly. Even with sleep mode record option on, it stops recording when the device sleeps. I want my money back!

Auto starts after reset data!. When data is reset the meter starts automatically! There is no setting to turn this off. Resulting in inaccurate results due to capturing ambient noise

Terrific for Home Theatre. Hello just wanted to say how pleased I am with the Pro version as it’s used in my Theatre to Calibrate Speaker Levels. Been using for well over one year and have it on all Five Apple Devices. I had this app tested with real professional sound microphone and calibrated to within 2dB. If you know what your doing you can use the Freq Analyzer to EQ your home theatre Subwoofers. Thanks for the great app!!! Jason B. PADUCAH.

How accurate is the app?. You claim the app is precalibrated for all Apple devices and precision matches “real SPL devices”. What is the accuracy tolerance and compared to what standard? Your statement is meaningless without data. I really like the app, but I must treat the results as estimates of unknown precision.

Back to the drawing board. 8.2.6. Pardon me developers but this latest update has lost my level history graph. Now it is just blank.

Great, accurate app. I use this app all the time and have found it accurate and stable. Thanks to the team!

Love It. It’s does what I need again! Thank you to the developers for making it great again! And for letting me know all is good now!

Not optimized for iPhone XS Max. I purchased this app with the hopes of calibrating my speakers but the app doesn't display right on my iPhone XS Max. The screen is cut off and I can't access some of the functions.

Decibel X in pro setup. Just got this to use in a 400-seat auditorium new PA system setup. Very useful! I’m doing relative measurements, but it seems to be quite accurate.

Awesome. This app really helps me in my home studio. I was recommended this app by the Conservatory of Recording Arts and Sciences and I haven’t been disappointed with it at all. Splendid app!!!!

Pro dB decibel. I look this App is exquisitely features that look professional work. I encourage you have this App for yourself as expertises in dB sound level analyst for serious musician or just fun entertainment.

Quick and easy. This app is very quick and easy to use and enjoy it very much

Works well, convenient, accurate. Very convenient, easy to use, tested its accuracy against machinery I have with factory tested dB levels and is very close. Can’t beat this for $5.

Huh?. Great reference when making a point

App will not even open. I just upgraded to the paid version and the app will not even open. The screen flashed and goes back to the apple home screen. Completely useless.

iphone 6 plus photo crash. Every time i switch from main screen to Photo screen (within app) the app shuts down. rebooted phone - reinstalled app - will not work anymore - at 1st it worked a few times - but then crashed - thats the only reason i got the app - to document the noise.

New update crashes when opened. I just updated to the newest version of Decibel X Pro, and now it won’t open on my phone. Needed it to measure sound levels at a performance tonight and it wouldn’t open. Very disappointing. I’d rate it “0” stars for that malfunction, but zero isn’t an option. The app has worked well prior to this update.

Db and spectrum analysis. Does an excellent job of recording the Db level and also the predominant frequency

Works Ok. Simple and easy to use.