SUS4 Loop Builder: Loop Pedal
Layer up to 8 tracks, overdub
Free · In‑App Purchases
Record a part, loop it, stack the next one on top. Up to 8 tracks, undo the last layer, export the mixdown. Works offline, like a pedal in your pocket.
Record a part, loop it, and stack the next one on top.
Up to eight tracks, each with a level control, so the idea sounds like a song before you leave the room.
Fully on-device: no cloud, no account.
Start with a chord loop, add a bass line, then a melody. Undo the last layer if it was wrong. When it works, export the mixdown as an audio file.
• Up to 8 loop tracks, with level and mute per track
• Undo the last layer
• Export the mixdown as an audio file
• A library of saved loop sessions
For guitarists and singers building song ideas, beatboxers, and anyone who uses a loop pedal on stage and wants one in their pocket.
Pro, or SUS4 All-Access across the whole range, adds reverb, delay and 3-band EQ on each layer, stem export (every track as a separate file) and unlimited saved loops.
Made in the UK by working musicians.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
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.
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
- Seller
- Paul Smith
- Size
- 28 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.
- iPhone
- Languages
English and 43 more
- English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SUS4 Loop Builder Lifetime $59.99
- SUS4 All-Access $4.99
- SUS4 Loop Builder Pro Monthly $0.99
- Copyright
- © 2026 4chords Studios