Change your music's tempo and pitch in realtime quick and easy. Just select an audio file, mark the region you want to play (and loop/repeat) and change tempo and pitch on the fly.
It is also possible to export the changes to an audio file.
Use cases of Music Speed Changer are for instance: practicing guitar and other music instruments, transcriptions, change the speed of audiobooks...

- Change pitch and tempo (speed, time-stretch) independently
- Loop region
- Select region
- Filtering
- Import various formats including mp3, wav, m4a, ogg, aac, ...
- Export to wav and mp3

** Note **
Music files should be located in your MacOS "Music" document folder for best user experience. Files which are located outside this folder can lead to "File open" errors.

What’s New

Version 1.54

- MacOS 10.10 Yosemite bug fixes.

Ratings and Reviews

1.9 out of 5
12 Ratings

12 Ratings

rotrier ,

Crashing in infinity!

I haven’t had a chance to try the app because when it launch, it kept crashing and crashing and crashing and crashing. Where’s the refund button? Oh, I kept forgetting, this is Apple App Store, not Google Play.

Quality App! ,

Works Great for me!

This app does exactly what it says it will and it was very affordable. Thank you for sharing an app for adjusting the tempo and pitch of music. Works wonders if you’re into cinema :)

motoko katayama ,

worked only once

This app worked only once and when I tried to play another file it didn’t work. Error message said “No audio file is opened. Please select an audio file,” when I highlighted a file and hit Play.

This is totally waste of my time.

The help functionality is so cofusing.

Dont’ put so many fucntionality when the basic play back doesn’t work. bad interface design too. Very disappointing


Harald Meyer
13 MB

OS X 10.7 or later, 64-bit processor



Age Rating
Rated 4+
© (C) 2014


  • Family Sharing

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

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