Amazing Slow Downer

Amazing Slow Downer download

If you're a musician who likes to learn new songs and techniques by listening to the same piece of music over and over but wish that the music could be played a little slower, then you'll enjoy Amazing Slow Downer.

You can repeat any section of the music at full speed, slow it down or even speed it up by changing the speed between 25% (1/4 of original speed) and 200% (double speed) without changing the pitch!

Change the tuning or musical key? No problem, Amazing Slow Downer handles that as well.

Setup seamless loops by touching the "Set" buttons during playback.

Amazing Slow Downer is the ideal tool for any musician, transcriber or dancer wanting to improve their skills.

Important notes:
Cannot play DRM protected files from the iTunes store (m4p and audio book files).

Amazing Slow Downer App Description & Overview

The applications Amazing Slow Downer was published in the category Music on 2009-03-27 and was developed by Roni Music. The file size is 7.05 MB. The current version is 6.2.7 and works well on 9.0 and high ios versions.

New - Made it possible to start and stop playback in the "Trim Loops" view
Change - Workaround for a bug in iOS 12.2 that prevented playback after exporting a song
Bug fix - Minor fix related to reading ID3 tags in mp3 files

Amazing Slow Downer App Tips, Tricks and Rules

Amazing Slow Downer Reviews


The Best Practice Tool Hands Down!!!!!  DudeRock430  5 star

This is the best practice / jam tool! I use it all the time! I have had this for years and it still does everything I need it to do. Wanna jam along or learn a Van Halen, Jimi Hendrix, or SRV tune and don't want to tune down a half step? No problem! Just raise the pitch! Wanna set a loop to play a solo or difficult part over and over? You can do that! Need to slow a difficult part down and slowly increase the speed as you get better? This app can do it! You can even export songs you adjust!!! I use this about every time I play and it is the most important jam app I have hands down!!!


Doesn’t work for me  RachHarp7  1 star

This isn’t compatible with Amazon music, which is where I have all of my music. I’m disappointed that I spent my money on this app and I wish I had known this before I bought it.

Chelle Mandolinist

LOVE THIS PROGRAM, Should have purchased 3 years ago!  Chelle Mandolinist  5 star

I am currently a mandolin student and purchased to learn an advanced solo. I fell in love with this APP immediately and wished I would have bought years ago! You can slow down and learn at a speed to catch every little detail and as you progress, you then reward yourself by increasing the speed! Easy to follow! I only wish it would work with my Bluetooth speaker!


Still great after all these years  GuitarGrrl68  5 star

The first version of Amazing Slow Downer that I bought was on a floppy disk and ran on my Windows 95 computer. The software was great then and the iOS version available today is even better! Thanks for continuing to develop this useful tool for musicians.

André Web

Amazing technology  André Web  5 star

You can’t judge an app by its user interface. Not to mention the user experience is pretty solid especially for such a difficult conceptual notion. But most impressive is the apps ability to slow down a song without changing the pitch. I’ve tried many apps , including various mixing software and they don’t even come close. This app is a blessing for my life.


YAY  ichisatori  5 star



Does not work with new Apple iOS.  littlepigmusic  1 star

iTunes and the new apple iOS protects the music and even though I bought the music, I can only use iTunes to play it. Unfortunately the only way I found out was going to the developer website and reading the faqs


Marginal  Bradleybt  2 star

If your Apple Music was synced to the cloud and you try to play it the music won’t play because apple put some kind of encrypted tag on it. Good luck figuring out how to get music to work with this app.


Excellent  Bowser47  5 star

I use this app to help me learn Irish traditional music by ear. The only feature that I wish it had is the ability to download an mp3 directly from the web.

Mikes jello

Still the Best!  Mikes jello  5 star

I first encountered Amazing Slow Downer when it was only a desk top app, and maybe the only of its kind, and the iPhone was still a dream. This app has every bit of that capability and then some. I highly recommend this for musicians.


Bugs  JuliaBeb  3 star

This app has been amazing for a year or so, but now and after updates it’s starting to glitch out all the time with error ‘playback failed’ ... very frustrating.

Patrick Sully

It really is amazing  Patrick Sully  5 star

As a singing teacher, I find this ap incredibly helpful! Changing keys, and tempo for learning and performing songs. Just brilliant.


You need this App!  Eliza_Doolittle  5 star

It’s must have! Perfect App so many ways. Have got so much use from it. Really helpful learning songs. Buy it!


Where is the Dropbox button???  Tania_tjc  2 star

I love this app. But with recent upgrades the Dropbox button has gone missing! Please bring it back! I NEED IT!!!


So useful. So easy to use  Paediatrician  5 star

I have been using for past 3 years. ALWAYS use when I practice (and apart from improving my rhythm and tone, having the tune play in the background makes me sound even better! )thankyou.


Good but Spotify doesn't work  Lucas.L.M.  2 star

The app itself is pretty good. One can change the velocity of a song, change the pitch and even loop certain parts of a song. But the reason why I paid more than 20$ for this app is because of the Spotify function. AND IT DOESNT WORK! Every time when I try to connect ASD with Spotify, the same error notification pops up:" Cannot connect to the Spotify server" This really annoys me because that was the main reason why I bought it. Really disappointing.


Excellent  Mike.p.  5 star

Straightforward, simple but does everything you need, create and store loops etc as well as the usual speed and pitch. Mainly I like how big and easy the buttons are, when you have an instrument in your hands it's easy to quickly tap pause/play and quick rewind (which you can set to go back in different increments - great feature). Hopefully they don't change this aspect. You can't see the waveforms of the track but I don't think that is a problem, if anything it probably helps keep less cluttered.


Great App  Timkeys  5 star

Nice update Moving songs works well


Amazing  Tvfairy  5 star

The best app on the store. Works perfectly Constantly updated No glitches and works just brilliantly. Buy it. You won't regret it, Fantastic customer service.


Awesome  Pepsicle84  5 star

This has got to be one of the only apps that stays on my phone constantly. Does what I need when I want it to. It comes in so useful when I'm trying to figure out parts of music and I love its ability to transpose the track.


Pretty Neat  007Gigi22  4 star

I really like this but a couple of things....what would be awesome if they included a metronome/click track for the back ground, and also if they added when playing back at whatever percent below the normal speed it figured out what that tempo was like a metronome number. So if I'm playing back at 90 percent it would show up that new tempo. Another thing is the looper is kinda weird-not just in setting up your loop, but it doesn't seem to let you toggle between playing the full song and the loop back and forth and or saving it within the program. Other than that pretty cool.


The app I've been searching for!!  RMD1976  5 star

Great for all levels of guitarists. Import your music from iTunes and pick a song. Then pick a segment and loop it. Play it over and over. Slow it down or speed it up. Great to play along with to ensure you've got the timing down. Amazing. Worth the cash.


Awesome Product  vaifan515  5 star

Works great and is easy to use.


This is amazing  Bloomer1338  5 star

I love this app ! It does it's job perfectly


mp3s and m4as "unsupported file types"?  Cbarker  1 star

Can't import music, and get messages saying that ASD doesn't support music file types. (?) When I asked tech for support, I got an email back saying that the problem definitely wasn't due to the app. How was that answer supposed to be helpful? Not looking to assign blame, just trying to get the app to work. Problem solving was needed. Roni Music tech unable to provide support. I understand language barriers, and I don't mind having to sift through garbled English--I really appreciate honest effort. Sadly, didn't get experience positive customer service. Expensive payout for zero production.


Great app!!  Poporopo00  5 star

I wish it had a fade in and out option when importing or sharing files but everything is great...awesome. (They block my e-mail address for asking to much but oh well...LOL)

Hot spheres

Amazing Slowdowner  Hot spheres  5 star

Best app.!!!! Good job.


Fantastic for pitch and tempo shifting  Allquix  5 star

One of the best apps on the App Store for pitch and tempo shifting, definitely - the Spotify support is incredible!


Needs some restructuring  Theodare  3 star

First of all, the app does a great job at slowing songs down and maintaining pitch. My kids use this app to practice violin and they are able to slow down complicated pieces and hear the notes clearly. However, this app has several problems that need to be addressed to make it more user-friendly. 1)when you go to load songs from iTunes, for some reason it loads them in reverse order and you can't change them around once they're loaded short of deleting them. This means the first song you load becomes the last one on the list. Once you know this, you can begin at the bottom of the sing list and load them backwards, but this is silly and unnecessary. 2) ASD only lets you load one song at a time as opposed to loading an entire album. Not only that, it does not remember where you just pulled your last song from. This means for every song from an album, you have to find it again in iTunes as though it were the first time. Again, silly and unnecessary.


Used for years. First class app  adaptiveagile  5 star

Everything I need for music playback. Slowdown, pitch shifting, looping. Only drawback is it's primitive filing system which isn't that intuitive. I read that this update allows for media name edits which is a major step up.

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