TempoBench: Slow Down Music
Pitch-safe speed & AB loops
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Convert videos and Live Photos into high-quality looping GIFs. Core features work offline, no account required.
Put the song on your workbench, slow it down, and hear every note.
TempoBench is a practice player built for musicians who transcribe by ear. Import an audio file or record a rehearsal, play it back at 25%–200% speed without changing the pitch, loop the tricky bars seamlessly, and zoom into the waveform to land exactly on a phrase.
Features:
- Time-stretch: 25%–200% playback speed, pitch stays put; changes apply instantly without interrupting playback
- Pitch shift: ±12 semitones in steps, plus ±50 cents fine-tuning for off-pitch recordings; fully independent from speed
- AB loops: tap in/out points for a seamless loop, nudge endpoints by milliseconds; save unlimited named loop regions, each remembering its practice speed
- Waveform navigation: tap or drag to seek, pinch to zoom 1–16x
- Flexible import: mp3 / m4a / wav / flac and more from the Files app or cloud drives; or record straight into the library
- Practice memory: position, speed, pitch, loops and notes are saved per track and restored next time
- Background playback with full Lock Screen and Control Center support
Pricing, honestly: every feature is free and the library has no track limit — speed, pitch, AB loops, recording and saved regions are all included, with no paywalls anywhere. A single banner ad sits at the bottom of the screen; if it bothers you, a one-time Remove Ads purchase takes it away. It does not unlock anything new. No subscription, no account.
Privacy: your audio, recordings, loop regions and notes all stay on this phone and are never uploaded. Practice works fully offline — the bottom banner is the only thing that needs a connection. No tracking, and no App Tracking Transparency prompt.
Ratings & Reviews
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The developer, 丽佳 施, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 丽佳 施
- Size
- 4.8 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Simplified Chinese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $0.99
- Copyright
- © 2026 Jayden Chen