Before you buy AudioStretch, consider first downloading AudioStretch Lite for FREE. Apart from some feature limitations, it's the same as the full (paid) version. The Lite version is a great way to see whether AudioStretch works well for you.

As a musician one of the most helpful tools you can have is the ability to slow-down, loop or auto-transpose the notes for a piece of music you are trying to learn.

AudioStretch is the world’s first audio and video transcription tool.
Now you can manipulate the pitch, speed and transcribe your tunes from both audio and video files; or by using your phone’s camera you can capture video directly into AudioStretch and transcribe it!

• Import audio or video files
• Capture video with your phone camera for transcription
• Change the speed of files without changing the pitch
• Listen to the individual notes as you drag the waveform
• Play audio and video at zero speed
• Transpose any music
• Loop difficult to learn sections

With AudioStretch you get all of this in an incredibly responsive and easy-to-use app. Ideal for transcription, learning songs by ear, crazy sonic experimentation, or just listening to your music library in a new way.

• Load songs from your Music Library. (Note: songs from Apple Music have DRM and therefore cannot be loaded).
• Document Picker import/export option supports iCloud, OneDrive, and more
• Open Dropbox files and email attachments via "Open In"
• LiveScrub™ : listen as you drag/hold the waveform
• Speed range -10x to 10x, including zero speed!
• Instant freeze to zero speed by double-tapping on speed display
• Pitch shift range +/- 36 semitones
• Keyboard/spectrum feature for transcription
• Super-fine speed/pitch adjustment via drag left-right on speed/pitch display
• Flexible looping feature
• Audiobus support: stream live audio directly to other Audiobus-compatible apps!
• No ads or in-app purchases

If you run into any problems with AudioStretch or AudioStretch Lite, please contact

What’s New

Version 6.4.0

- An artwork of the playing track is now displayed on the lock screen.
- Fixed issues with opening App Store page from Settings.

Ratings and Reviews

4.3 out of 5
31 Ratings
31 Ratings
Bigvarsity ,

Doesn’t seem to work for me

Can’t seem to get any real help...$9.99 for nothing

Developer Response ,

Hi Bigvaristy - We're sorry to have let you down. We'd love to be of help! Do you recall tapping on the settings icon on the top right corner of the user interface and tapping on Support in order to reach out to us? Please do let us know what seems to be the issue and we'll address it right away! You can also reach out to us at Thank you!

Armando 50000 ,

AirPod control problems

It hard to stop the track or play back when you double tap because the app doesn’t respond most of the time.

Developer Response ,

Hi Armando 50000 - We appreciate your feedback, thanks! We recommend controlling the app from your phone, as there will always be a delay between your phone and a Bluetooth device.

abritabroad2 ,

Had app for Five Minutes. Wow

This is the only slow down app to by period. I have had them all and have been battling the slow down challenge for 55 years. Cassette tapes you name it but this is SO Easy to use already The scrub feature and the in app reminders are a blessing. Other apps I have used are a maze of settings but not this one although in the Settings section I noticed a bunch of useful shortcuts. I wish Ableton had the scrub feature. Thanks so much guys.

Developer Response ,

Hi abritabroad2 - Thank you for the support and the great feedback, we appreciate it!


Cognosonic Pte Ltd
10.5 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 Cognosonic Pte Ltd


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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