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  • Music Speed Changer - Slouly screenshot 1
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  • Music Speed Changer - Slouly screenshot 3
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About Music Speed Changer - Slouly

Slow it down. Speed it up. Make it yours. Slouly changes the tempo, pitch and sound of any song on your iPhone. Slow a track right down and it still sounds like music, because the pitch stays where it was. WHAT YOU CAN DO: - Slow a song down to learn a part, or speed it up to practise at tempo - Shift the pitch to match your voice or your instrument - Add room reverb for depth and space - Boost the bass, and choose the frequency it works on: 60, 80, 120 or 200 Hz - Turn on Pan Speed for an 8D effect that moves the sound around you - Export as Apple Lossless, ready to share anywhere HOW YOUR MUSIC GETS IN: 1. Share a song or a video to Slouly from any app, including Photos. 2. Or import from Files, or pull the audio out of a video you already have. 3. Slouly keeps the title, artist and artwork, so your library stays tidy. PRESETS: Save a combination of tempo, pitch, reverb, bass and pan as a preset, then bring it back with a tap. Rename, reorder and delete them as your setup changes, so the settings you use every day are always one tap away. EXPORTS THAT STAY ORGANISED: Every export keeps the original song's tags, with Slouly credited. The filename carries the values you used, and an export that would overwrite an earlier one is numbered instead. Synced lyrics are rescaled to the new tempo and the BPM tag is scaled to match, so the file still lines up wherever you play it. BUILT FOR: - Musicians learning a part at a slower tempo - Singers matching a track to their range - Dancers and DJs setting the speed they need - Anyone who wants a song to sound the way they like Web: https://tryslouly.app Privacy: https://tryslouly.app/privacy Terms: https://tryslouly.app/terms

Ratings & reviews

4.7

13 ratings

5 ★ 92% 4 ★ 0% 3 ★ 0% 2 ★ 0% 1 ★ 8%

What’s new

Version v1.0.6 · Updated September 24, 2026

Slouly v1.0.6 brings your music in from anywhere. Share to Slouly. Songs and videos shared from other apps, including Photos, now open straight in Slouly. Presets. Save a set of tempo, pitch and effect values, then bring it back with a tap. Rename, reorder and delete them as your setup changes. Your tags are kept. Exports carry the original title, artist and artwork with Slouly credited. Synced lyrics are rescaled to the new tempo, and the BPM tag is scaled to match. Lossless export. Every export is Apple Lossless in an m4a file. Fixed: an export whose name already exists is numbered, "name (2).m4a", instead of overwriting the earlier file. Also new: a Settings screen with a switch for crash reports, and a Credits screen.

App privacy

The developer, Aibek Mazhitov, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Diagnostics: Crash Data, Performance Data, Other Diagnostic Data

Used for: Analytics, App Functionality, Other Purposes

Alternatives to Music Speed Changer - Slouly

Looking for apps like Music Speed Changer - Slouly? Here are 6 similar apps on the App Store. The highest rated is Easy Music Speed Changer (5.0/5), and all 6 are free to download.

Music Speed Changer - Slouly vs. alternatives
App Rating Price Last updated Compare
Music Speed Changer - Slouly 4.7 / 5 (13 ratings) Free September 24, 2026
Easy Music Speed Changer 5.0 / 5 (2) Free Apr 24, 2026 Compare
Music Suite - BPM, Pitch Shift 5.0 / 5 (2) Free Oct 11, 2026 Compare
Music Speed Changer: SongVault 4.9 / 5 (8) Free Jun 9, 2025 Compare
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Pitch Changer · Transpose Tool 3.7 / 5 (6) Free Apr 9, 2026 Compare
Music Speed Changer: SongX 4.4 / 5 (41) Free Aug 20, 2026 Compare

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