midiOS

Mobile MIDI, done right.

Only for iPhone

$14.99 · Designed for iPhone

iPhone

A fully customizable mobile MIDI instrument for producers, songwriters, and performers. Before installing, visit midios.app/setup for setup instructions. midiOS is a new kind of digital instrument. It transforms your iPhone into an expressive performance surface using multi-touch, motion, and an intelligent harmonic engine—letting you play harmony, melody, rhythm, and modulation with immediacy and feel. No dedicated hardware. No barriers. Just the instrument millions of creators already own. How It Connects midiOS works with any DAW using a standard USB cable for ultra-low-latency MIDI control. For advanced two-way Ableton Live integration—including clip launching, LED feedback, track colors, and bi-directional control—optional companion tools are required, along with a Wi-Fi or personal hotspot connection. Complete setup guides are available at midios.app/setup Expressive by Design midiOS is not just a controller—it’s an instrument. • Expressive pads for notes, chords, drums, and performance • Secondary gestures for pitch bend, octave shifts, inversion, and modulation • Built-in harmonic engine for scales, modes, and intelligent chord progressions • Tilt control powered by CoreMotion • Optional facial-gesture modulation for hands-free control • Multiple pad types: XY pads, sliders, knobs, toggles, envelopes, and drums Built for Performance • Ultra-low-latency MIDI over USB • Fast bank switching with customizable layouts • Visual and haptic feedback designed for live play • Designed exclusively for iPhone Whether you’re producing in Ableton Live, performing on stage, or sketching ideas on the go, midiOS delivers a fluid, ultra-responsive experience that can replace entire rigs of traditional MIDI controllers. Start here: midios.app/setup

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What’s New — Version 2.1.11 Improved first-launch MIDI setup guidance, making it easier to get connected and start playing right away. Visit midios.app/setup for setup instructions.

The developer, jason merrill, 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, for example, based on the features you use or your age. Learn More

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

    • Seller
      • jason merrill
    • Size
      • 7.2 MB
    • Category
      • Music
    • Compatibility
      Requires iOS 26.0 or later.
      • iPhone
        Requires iOS 26.0 or later.
      • Mac
        Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
      • Apple Vision
        Requires visionOS 26.0 or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © Jason W. Merrill