# Grooves: Song Speed Changer

> Speed up or slow down any song

Canonical page: [https://chrome-stats.com/d/id592398757](https://chrome-stats.com/d/id592398757)

## Overview

- **ID:** `id592398757`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Open Planet Software
- **Category:** Music
- **Rating:** 3.70 / 5 (95 ratings)
- **Version:** 37.0
- **Last updated:** 2026-05-27
- **First published:** 2013-01-23
- **Size:** 3.00 MB
- **Data as of:** 2026-09-25
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/grooves-song-speed-changer/id592398757)
- **Website:** [https://www.openplanetsoftware.com/grooves](https://www.openplanetsoftware.com/grooves)
- **Privacy policy:** [https://www.openplanetsoftware.com/privacy.html](https://www.openplanetsoftware.com/privacy.html)

## Description

From the makers of the award-winning Just Press Record, Perfect Tempo lets you speed up or slow down more than 100 million songs across Apple Music, the Music app, and Files, all without changing pitch or fidelity. Create unlimited Setlists, access cloud sources, and control playback from your Apple Watch for ultimate convenience. 

Fine-tune tempo with a simple slider from -50% to +100% in 1% increments, revert to the original tempo with one tap, and let the app remember your choices. Use Repeat One Section to practise by looping a segment at different speeds. AirPlay, Dark Mode, and key changes for locally stored DRM-free files are supported. Note: Songs from streaming services other than Apple Music are not supported.

## Rankings

- #150,048 — Overall

## Review summary

Perfect Tempo provides strong tempo control for practice and learning, plus an easy, elegant UI and support for local files and looping sections. It’s popular for teaching and routine practice. However, recurring issues include broken Apple Music integration after updates, missing autoplay, audio distortions at tempo changes, bugs in features like pitch/loops, and mixed value for the price. These themes appear across multiple reviews.

### Pros

- Precise tempo control that enhances practice and learning of songs and solos.
- Very user-friendly, simple, and elegant UI that stays out of the way.
- Supports local files and easy management of playlists/setlists for practice.
- Ability to loop or repeat sections for focused practice.
- Used by teachers and choreographers for teaching and practice.

### Cons

- Apple Music compatibility and playback are broken by updates, making Apple Music songs inaccessible or unusable for many users.
- Lack of autoplay or reliable automatic progression to the next track in a playlist.
- Audio quality distortion or compression when tempo is adjusted (especially at low or higher tempos).
- Bugs and glitches affecting features like pitch shift, loop start/end, and setlist behavior after updates.
- Mixed perceived value for the price, with some users feeling it’s worthwhile and others feeling it’s not worth the cost given the issues.

## Similar extensions and apps

- [Music Speed Changer: SongVault](https://chrome-stats.com/d/id6478494513) — 4.90 / 5
- [Loop Slower](https://chrome-stats.com/d/id6680190953)
- [Accompanist: Music Speed](https://chrome-stats.com/d/id6775120402) — 5.00 / 5
- [Slowdan](https://chrome-stats.com/d/id6755439724)
- [Music Speed Changer Pro](https://chrome-stats.com/d/id6777898097) — 2.00 / 5
- [Slowify: Music Speed Changer](https://chrome-stats.com/d/id6446010473) — 4.30 / 5
- [Music Speed Changer-Transpose](https://chrome-stats.com/d/id6447086413) — 4.50 / 5
- [Pocket Jam: Loop & Tempo](https://chrome-stats.com/d/id1153284525) — 4.40 / 5
- [Music Speed Changer - Audio](https://chrome-stats.com/d/id6738496726) — 4.30 / 5
- [Music Speed Changer ▶▶▶](https://chrome-stats.com/d/id1595494271) — 4.80 / 5
- [Music Speed Changer・Audio](https://chrome-stats.com/d/id6738125207) — 4.50 / 5
- [Music Speed Changer - Slouly](https://chrome-stats.com/d/id6748889278) — 5.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/id592398757)