Grooves: Song Speed Changer

About this app

SLOW DOWN AND SPEED UP ANY SONG Maybe you’re trying to learn a tricky guitar riff or figure out a new dance routine. Or maybe you want to change the speed of your favourite tracks to lock into the rhythm of your fitness workout. Grooves lets you continuously adjust the speed of any song in the Apple Music catalog, in your iPhone Music Library or Files app to a speed that’s right for you. PICK ANY SONG • Change the tempo of any song on Apple Music, in your Music app or Files app without affecting pitch or fidelity • Access the entire Apple Music catalog of over 100 million songs! • Play tracks from the Files app, including on Cloud Drive, Dropbox and other cloud services • Quick access to your recently played songs ADJUST THE TEMPO • A simple slider for adjusting tempo • Select any tempo from -50% to +100%, in 1% increments • Easily revert to the original tempo with just one tap • Grooves will remember your chosen tempo until you want to adjust it again CREATE SETLISTS • Create unlimited Setlists • Continuous play from one song to the next • Set and remember different tempos for different songs • Combine songs from Apple Music, your Music app and Files app all in the same Setlist • Create Setlists from existing albums and playlists in your Music app or on Apple Music REPEAT JUST ONE SECTION • Select a section of a song and then loop it to make practise easy • Add sections of a song to a Setlist multiple times and then play them back at different tempos APPLE WATCH • Easily control playback, tempo and volume from your wrist AIRPLAY • AirPlay support for output to wireless speakers or Apple TV AND MORE.. • Change the key (transpose up or down) of locally stored DRM-free songs imported into the app or from your Music app. (Missing the pitch controls from the last version? Re-enable them in the Settings app > Grooves. Then swipe left on the album artwork when playing a song) IMPORTANT NOTE! * Songs from streaming services other than Apple Music are not supported *

Welcome to Grooves! Grooves is the new name for Perfect Tempo. There's also a new app icon and the interface has a refreshed look with Liquid Glass. Grooves will never interrupt you to ask for a review - we don’t like being interrupted either! However, App Store ratings and reviews are important, so if you are enjoying Grooves and have a spare minute, we’d be delighted if you could leave a rating or review on the App Store. Thanks!

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 7, 2026 · 11:45 AM $4.99