
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
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- 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+
- 4+
- Copyright
- © Jason W. Merrill
