Grid Music is a 2-dimensional MIDI step sequencer. It can be used to compose classic 16-step patterns, but can also create loops, random branches, and polyrhythm. Its 5×5 grid allows for countless arrangements of melody and timbre while keeping the entire composition visible and easy to understand. Pitch and rhythm can be directly manipulated by touch, and the structure of a pattern can be altered in just a few taps.

• Send MIDI notes and control change messages to compatible synthesizer apps. If you have a compatible MIDI interface and the Lightning to USB Camera Adapter, Grid Music can control an external MIDI synthesizer.

• Easy to use built-in synthesizer featuring envelope settings, PWM, and vibrato.

• Randomize button for quickly exploring new melodies.

• Pitch quantization ensures that notes are always in key and makes it simple to create chord progressions. Includes several scale and chord options.

• Multiple levels of undo while editing patterns.

• Perform songs with perfect timing using synchronized pattern queueing.

• Support for Ableton Link allows Grid Music to play in time with other apps and devices.

• Support for the iOS Files app makes it easy to organize your compositions and access them from multiple devices.

What's New

Version 2.1.1

Fixed in 2.1.1:

- Grid Music would sometimes keep Ableton Link active when not needed.
- MIDI output devices could be shown as connected if they were disconnected while Grid Music was in a suspended state.

New in 2.1:

- Grid Music can now control other synthesizers via MIDI.
- Randomize button, which randomizes the values of a pattern’s note cells.
- When editing a pattern, you can undo changes like randomization, adding or removing connections, changing cell values, and more.
- More scale options for pitch quantization, including triads and sevenths.
- The synthesizer now supports a sustain parameter.

Ratings and Reviews

4.6 out of 5

5 Ratings

5 Ratings

Excellent midi exploratory music tool

Glass wedge

Very fun tool to create midi patterns and rhythms.

Not real happy with the user interface, could be improved.

Would also like to see a larger grid. Why not? Remember those of us with tablets and more screen real estate.

Would be great if this was an audio unit and could be used with AUM.


Michael Daines
10.1 MB
Requires iOS 11.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, and iPod touch.
Age Rating
Rated 4+
© 2018 Michael Daines


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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