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.

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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.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Provider
    203 Electronics LLC
    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.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 203 Electronics LLC