Perfect Tempo 4+

Any Song. Any Tempo‪.‬

Open Planet Software

    • $4.99


From the makers of the award winning Just Press Record comes Perfect Tempo, the only app which lets you speed up or slow down over 50 million songs on Apple Music, as well as your iPhone’s Music Library, without affecting pitch.

It's an ideal practice tool for musicians and dancers. Play along or dance to songs at the speed you want without losing fidelity.

Play songs directly from Apple Music, from your iPhone’s Music Library or from iCloud Drive, Dropbox and other cloud services.

You can even change the tempo of any of your recordings made in Just Press Record!

** Please note that songs from streaming services other than Apple Music are not supported **


Learn songs at your own speed.

Repeat any section of the song to practice a particular passage.

Rip your backing track CDs and play along to them at your own speed.


Practice your routine at the speed you want.

Put any section of the music on repeat to learn complicated steps.


• Fine control over playback tempo in 1% increments with a simple slider.

• Direct access to over 50 million songs on Apple Music as well as all the songs in your iPhone’s Music Library.

• Import backing tracks and other audio files stored on cloud services such as iCloud Drive and Dropbox.

• Direct access to all your recordings made in our app Just Press Record.

• Repeat the whole song or just one section to make practicing tricky sections easier.

• Quickly access your 'Recently Played' songs.

• Use your Apple Watch to control tempo, volume and repeat right from your wrist.

• AirPlay support for output to wireless speakers or Apple TV.

• Dark Mode support.

• Change the key (transpose up or down) of locally stored DRM-free songs imported into the app or from your iPhone’s Music Library. (Missing the pitch controls from the last version? Re-enable them in the Settings app > Perfect Tempo. Then swipe left on the album artwork when playing a song).

What’s New

Version 34

Apple Music support is back!

iOS 15.5 restores the ability for apps to adjust the playback speed of songs from the Apple Music catalog. As a result, Perfect Tempo will once again display and play songs from Apple Music when running on iOS 15.5 or later.

When running on iOS 15.4, Perfect Tempo will not show Apple Music content.

Ratings and Reviews

3.5 out of 5
61 Ratings

61 Ratings

ZenMasterNewbie ,

Good but needs work

I really appreciate that this app existed since Apple Music refuses to offer a similar feature. After noticing some old favorite music was being unnaturally sped up by ~6% on Apple Music (like Billy Squier’s songs), this app did the trick to fix that. However…

Issue: After manual setting the correct playback speed for Squier’s songs in my playlist, I noticed the app would not automatically play the next song. It allow repeating of the same song but would not play through to the next. This should be the expected default behavior and I could find no way to play an entire playlist. I had to tap each song individually to get it to play.

Unless I’m doing something wrong, this seems like a serious failing of an otherwise pretty good app. Hopefully this will be fixed.

Emily in MVCA ,

Reduced functionality is a bummer

2022 review update: super bummer. It does still work with some of my songs but not my playlist that I built, paid for all the songs, and downloaded onto my phone. No longer useful for my running. 2019 review: Was delighted to find this super simple option for matching songs I love to my ideal running cadence. I am happy at 162 bpm but several of my favorite running songs are 158 bpm. After a few days playing with different software including GarageBand, I stumbled across this app! You do have to do a little math but it seems that 2% increase from my playlist is perfect. The interface is simple and familiar, and lets me access my playlist, any of my purchased albums, and Apple Music. It lists everything by song title but you can filter a little. So I set like 9 songs on a playlist, with a mix of original tempo and +2% tempo. The songs keep the choice I made, and there’s a toggle button to “repeat” or “off” or “repeat section”, but even when it’s off it still just plays the same song again. If it would go forward to the next song on the playlist, I’d like it better. As it is, I’ll have to mess around with my phone to manually choose the next song. Luckily they’re each pretty long!

Bdawg421 ,

Extremely useful!

This is a highly functional, useful app for slowing down audio for music practice. Little to no artifacts, the audio stays remarkably clear.

The UI could use a LITTLE bit of work though—it’s a bit difficult to create and edit loop phrases, and I really wish there was a 15/30 second back button.

It’s still extremely useful, and with a few more functionality tweaks, it’ll be perfect.

App Privacy

The developer, Open Planet Software, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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