Music Speed Changer

Contains adsIn-app purchases
137K reviews
Content rating
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About this app

Music Speed Changer allows you to change the speed of audio files on your device in real time without affecting the pitch (time stretch), or change the pitch without changing the speed (pitch shift). Alternatively, both speed and pitch may be adjusted together with a single control. The app is a music looper as well - you can slow down song speed and loop sections of the music for easy practice.

You can also save the adjusted audio to an MP3 or WAV audio file for sharing with friends or listening in another player.

Music Speed Changer is great for musicians practicing an instrument needing to slow down the tempo or practice in a different tuning, speeding up audio books for faster listening, making nightcore or just rocking out to your favorite song at 130%.

-Pitch shifting- change song pitch up or down 24 semi-tones, with fractional semi-tones allowed.
-Time stretching - change audio speed from 15% to 500% of original speed (change BPM of music).
-Utilizes professional quality time stretching and pitch shift engine.
-Rate adjustment - change the pitch and tempo of the audio together.
-Opens most audio file formats.
-Music looper - seamlessly loop audio sections and practice over and over (AB repeat play).
-Advanced looping feature - move the loop to the next or previous measure or set of measures with the touch of a button after the perfect loop is captured.
-Reverse music (play backwards). Decode the secret message or learn a passage backwards and forwards.
-Playing queue - add folder or album to the playing queue and add/remove individual tracks.
-Waveform view showing contours of the audio for precise seeking.
-Equalizer - 8-band graphic equalizer, and preamp and balance control.
-Analyze the audio to display the BPM and musical key of each track.
-Markers - bookmark positions in your audio.
-Audio effects - apply effects such as echo, flanger and reverb, or reduce the vocal levels in the music for a karaoke effect.
-Great for making Nightcore or Fast Music creations.
-Export your adjustments to a new audio file.
-Save an altered version of the whole track or only the captured loop section (excellent for making weird ringtones).
-Modern material design UI and simple to use.
-Light and dark themes.
-Built-in audio recorder.
-Completely free and no restrictions on this music speed controller.
-No waiting for your local audio file to decode, instant playback and instant audio speed and pitch adjustment.
Updated on
Jan 21, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted
137K reviews
Alan Revelo
January 27, 2023
This has been a very useful app. It's been stable and does basic tempo and key changes well. I didn't give it 5 Stars because the slide bars for tempo and key change are pretty sensitive. It takes a little bit of work to get things accurately adjusted. The other features seem to work well, too, but I rarely use them. All in all, a very good app! And minimal ads! I have changed my initial selection from 4 to 5 Stars. I got some helpful information almost immediately after I made my comments.
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Single Minded Productions, LLC
January 27, 2023
There is a setting in the main app menu that adds plus/minus buttons for adjusting that might be useful to you, or you can click on and edit the values directly. Here is more info on options to make adjusting easier:
November 19, 2022
I love this app, I've used it for many years but suddenly I'm having issues. The app continuously started crashing out of nowhere, and I can't get it to stop. I cleared data, reinstalled, restarted/shut down phone, updated phone, etc and it STILL crashes! I got it to stop after a while but it does it again once I remade my playlist. Please help, I think it's the app because I've done everything possible to fix it. I really don't want to abandon this app, there's nothing else like it.
20 people found this review helpful
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Single Minded Productions, LLC
November 27, 2022
This was due to an error that Google introduced server side in the AdMob ads library and has since been resolved.
December 9, 2022
Best Audio Temporizer App. While the ads are there, they're very non intrusive and rarely interfere with a constant use of the app. It has several bells and whistles as it promises, and would definitely be worth the price to pay for full non-ad performance. My only beef and why I'm not giving it the full 5☆ is because I have experienced a glitch in which music I play from Blackplayer EX becomes -duplicated- when I transfer it to the app. I hope devs can fix it soon, and I'll upgrade my review!
14 people found this review helpful
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What's new

- Bug fixes and improvements