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Grooves: Song Speed Changer

by Open Planet Software

  • Music
  • Paid
View on the App Store
Rating
3.7
95 ratings
Top 86%among 231 Music apps
Last update
Oct 9, 2026
Version 38.0
Size
3 MB
Category
Music
Tracked since
Oct 9, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

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 *

What’s new

Release notes for the latest version, as written by the developer.

v38.0

Updated the Grooves Apple Watch remote control app to add watchOS 27 compatibility.

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!

Rank history

Daily position in the US charts. #1 is at the top.

Best rank
#54
Current rank
#57
Days charting
2 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

82/100

Not flagged as small & simple

  • Developer size40% · 25

    Developer: 3 apps on the charts

  • Audience size100% · 20

    Ratings: 95

  • App size100% · 10

    Size: 3 MB

  • Price model100% · 15

    Price model: paid

  • Demand proof90% · 30

    Best rank #6, 27 countries

An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2

How the score works

Gap check · UK

Is this US chart app missing in UK?

Already on UK charts

It showed up on a UK chart in the last 30 days, so it is not a gap.

Store not checked yet

This is a candidate, not a verdict. Charts show at most 100 apps, so not charting does not mean no demand. Check the UK store before you decide.

See all gaps

Version history

  • 38.0LatestReleased Oct 9, 2026