303 Note - Acid Sequencer
tb-303 sheets
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
TB-303 note is an app for quickly jotting down and managing acid bass line synth sequences — TB-303, Behringer TD-3, Roland TB-03, and more.
Perfect for those moments when:
"I want to recreate this pattern on another machine, but checking all the original settings is a hassle..."
"My hardware's memory is full, but I don't want to lose my favorite patterns."
Patterns you save can be played back instantly. Turn the built-in synth knobs to dial in that signature squelch while you shape your line.
Key Features:
- A dedicated interface: A step sequencer screen that feels just like the real hardware. Note, Down/Up, Accent, and Slide — all editable on one screen.
- Built-in preview playback: Audition your patterns instantly, even while editing, so you can hear it and tweak it on the fly.
- TB-303-style tone knobs: CUTOFF / RESO / ENV / DECAY / ACCENT — dial in the feel before you commit it to hardware.
- Dark mode support: Easy on the eyes during late-night studio sessions or on a dark club stage.
- CSV export: Export your saved patterns as CSV for easy backup and management on your computer.
Keep your acid basslines safe and ready, anytime, anywhere.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
MIDI export is here.
- Export your patterns as MIDI files. Drop them into GarageBand, Logic, Ableton Live or any other DAW and keep working on your track. Accents and slides come along too.
- Sort right from the pattern list. Tap the button in the bottom right to switch between name, date and favorites.
- Per-pattern actions in one place. Tap "..." on any row to export or delete it.
- Tempo and sound settings (cutoff, resonance, envelope, decay, accent) are now saved with each pattern, so it sounds the same next time you open it.
Thanks for using the app!
The developer, tsubasa hattori, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- tsubasa hattori
- Size
- 24.4 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © atcraft