
SUS4 Recorder: Key & BPM
Record a take, see its key
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In-App Purchases
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About
Record a take and see its tempo, with an estimate of its key and chord.
Search your recordings by name, key or chord, so you can find that riff in D later.
Fully on-device: no cloud, no account.
Press record for rehearsals, lessons and ideas. The newest take gets a card with its key, BPM and chord. Add reverb or EQ on playback without changing the original, then share it.
• Records at 48 kHz
• Tempo detection with a key and chord estimate
• Reverb and 3-band EQ on playback, non-destructive
• Library with search by name, key or chord
• WAV export, share by AirDrop, Files or any app
For musicians recording rehearsals and lessons, and songwriters who want their ideas labeled.
Everyone gets five recordings a day. Pro, or SUS4 All-Access across the whole range, removes the daily limit and adds seven more reverbs, chorus, a compressor, drive and M4A export.
Made in the UK by working musicians.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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What's New in SUS4 Recorder
1.2.0
October 12, 2026
SUS4 now speaks your language: the app is available in 50 languages. Any lifetime purchase now unlocks every SUS4 app. A clearer upgrade screen, plus fixes and polish throughout.
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Subscriptions & In-App Purchases
SUS4 Recorder Pro Monthly
Unlock the full effects chain
$0.991 Month
7 Days trial






