NullPerator
A pocket music tracker
Free · Designed for iPad. Not verified for macOS.
NullPerator brings the focused tracker workflow to iPhone and iPad.
Compose patterns, arrange songs, record samples, and play them back through a compact interface designed around the NullPerator hardware. Use the on-screen controls or connect a compatible game controller. Route MIDI, keep projects in the Files app, and continue working without an account.
Features:
• Tracker composition and playback
• Touch controls optimized for portrait and landscape layouts
• Compatible game controller input
• MIDI routing, including supported Bluetooth MIDI devices
• Sample recording through the current iOS audio input
• Local project and sample storage through the Files app
• iPhone and iPad support
Your projects and settings stay on your device. NullPerator does not include advertising, analytics, or account tracking.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
What's new in NullPerator 0.2
- Added GB-Wave, GB-Pulse and GB-Noise instruments for Game Boy-style sounds and an LSDJ-inspired sound-design experience.
- Made all 64 instrument slots flexible, with dynamically allocated synth resources.
- Added a two-dimensional instrument selector: hold Enter on the instrument Type row, choose a sound engine, and release Enter to confirm.
- Balanced synth output levels against sample playback.
- Kept autosaves separate from manual saves. Projects now open the manual save, use npsong.dat for new saves, and retain compatibility with lgptsav.dat.
- Corrected the iOS controller Play and Shift mapping.
- Fixed sample importing after a type change, saving unedited recordings, delayed-note volume, and small display issues.
iOS 17.0 or later is still required.
The developer, 203 Systems, 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
- Size
- 2.9 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 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
- Age Rating
4+
- 4+
- Provider
203 Electronics LLC
- 203 Electronics LLC has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- DUNS Number
122110944 - Address
1509 Mitch Daniels Blvd
West Lafayette Indiana 47906-4558
United States - Phone Number
+1 9293918511 - Email
null@203.io
- Copyright
- © 2026 203 Electronics LLC