Otoo

Minimal Beat Maker & Sequencer

USD 4.99 · Designed for iPad

Otoo is a fun, one-screen music maker designed to get you creating right away. Its free-form sequencer lets you place, drag, and stack notes freely - no more rigid rows. Use the built-in sounds, the sampler, or your favorite AUv3 instruments, then remix ideas live with hands-on Performance Mode effects. On iPhone, Otoo makes AUv3 instruments feel at home with a large instrument view and a compact keyboard for immediate playing. Beautifully simple workflow
 • Free-form step sequencer with instruments not tied to fixed rows
 • Single-screen workflow with sequence, song structure, and mixer always visible
 • Tap or drag notes onto the grid to build beats and melodies
 • Stack notes to create chords 
• Per-step control of length, subdivision, and velocity • 4 rows on iPhone and 5 on iPad, with multiple instruments available in each row at different steps 
• 2-octave keyboard for playing and learning real notes • Multi-gesture mixer for switching instruments, muting, soloing, and adjusting volume Sounds and plug-ins 
• Up to 8 instruments per project
 • Built-in sounds and sampler
 • Use any installed AUv3 instruments in a large, near-fullscreen view with a compact keyboard 
• Up to 2 AUv3 effects per instrument
 • Sampler with instant key-by-key recording and chromatic mapping Patterns to full songs
 • Build songs from simple patterns
 • Draggable loop markers for quick arrangement changes Performance mode
 • Live sequencer and audio effects such as reverse, beat repeat, randomize, swing, triplet, tape, and more
 • Play the pattern like a keyboard by tapping steps directly Other features • Main output with built-in level protection • Automatic metronome when recording live into empty patterns • Export patterns or full songs as WAV or MP3 for easy sharing • Export performances as perfect loops • MIDI export • Supported time signatures: 4/4, 3/4, 4/4T and sequencer swing.

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What’s New • Added support for time signatures in the Tempo panel: 4/4, 3/4, and 4/4T. • Added MIDI export. • Added audio recording in Performance mode. The Rec button now turns into a Tape icon, and recordings can be bar-quantized, prepared as perfect loops, and pasted into the Sampler. Improved • Steps in a row no longer stop overlapping notes, so glide now works properly with some instruments. Fixed • Fixed issues with some Bluetooth speakers and headphones. • Fixed an issue where an instrument node could become invisible after being removed. • Various minor fixes and improvements.

Version 1.2

The developer, BeepStreet, 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

    Accessibility

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

    Information

    • Provider
      • Jaroslaw Jacek
    • Size
      • 63.8 MB
    • Category
      • Music
    • Compatibility
      Requires iOS 15.6 or later.
      • iPhone
        Requires iOS 15.6 or later.
      • iPad
        Requires iPadOS 15.6 or later.
      • iPod touch
        Requires iOS 15.6 or later.
      • Mac
        Requires macOS 12.5 or later and a Mac with Apple M1 chip or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © 2026 BeepStreet
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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