SUS4 BPM
Tap or detect the tempo.
Free · In-App Purchases
The band plays a song nobody wrote the tempo down for. Tap along for a bar or two, and the history keeps every number for the setlist.
What's the tempo? Tap it. Or just let the app listen.
SUS4 BPM does two things: it captures tempo from your taps, and it detects BPM live from a mic or an audio file. Both are useful. When a musician in the room is playing something and you need to know the exact tempo before you open your DAW or set a metronome, just point your phone and read the number.
Tap mode averages your taps and shows a stable BPM immediately. Live detection mode streams the BPM in real time from any audio source — a drummer practising, a track playing on a speaker, a click in a film cue. File analysis lets you load a recording and pull the tempo without even being in the same room as the player.
• Tap-tempo averaging with immediate stable readout
• Live streaming BPM detection from any audio source via mic
• Audio file analysis — load a track, get the tempo
• Clean, large display — readable at a glance from across a desk
• Subscribe monthly, or unlock the full SUS4 suite forever: unlimited live detection sessions and file analyses
Everything runs on your device. No audio files are ever uploaded.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
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Stability and performance improvements.
The developer, ThePaulSmith, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Paul Smith
- Size
- 21.8 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SUS4 BPM Lifetime £59.99
- SUS4 All-Access £4.99
- SUS4 BPM Pro Monthly £1.99
- Copyright
- © 2026 4chords Studios