MIDIRack
Kai Aras
Getting the latest details from the App Store…
MIDIRack is a MIDI toolkit for iPad. Build a custom touch surface from the KB-1 keyboard suite, an all-new sequencer suite, knobs, faders, buttons and more — then unlock a visual MIDI processing graph (one time in-app purchase) and wire it into anything, from a simple custom controller to a full-on groovebox or a self-playing generative composer. Play it on its own and send MIDI anywhere, as an AUv3 plugin in your favourite host or a standalone instrument. THE BASE APP — PERFORMANCE…
Top of Paid · Music in Japan. MIDIRack is #60 there. Changes are over 7 days.
How the app presents itself on the App Store. Select a screenshot to open it full size.
Version 1.1 · 3 Sep 2026 · 1 month ago
Now on iPhone. The app and the AUv3 plug-in run on iPhone in landscape, with a folding menubar, a full-screen lane editor, and a surface thats optimized for the small screen. New - Presets sync with iCloud and appear in Files as named .midirackpatch files. Organise them in folders, import and export them. - Multi-page control surfaces with named pages and page-select buttons. - Strings grid in any key: pick a root and scale, and glide stays pitch-true. - Custom drum pad layouts: set every pad's note and label, or learn from your kit. - Bluetooth MIDI pairing in MIDI Ports. - Dockable inspector you can float or hide. Inspectors and the surface scroll by scrollbar so sliders never pan the view (switch back in Settings). - Play from your computer keyboard: QWERTY piano, Z/X octave, C/V velocity, 1–8 and Q–I for drum pads. - XY mode on the Seaboard and Strings surfaces: left-right sends pressure, up-down sends slide, independently. - Apple Pencil expression: force plays the keys and pads, and drives pressure separately from slide on the MPE surfaces. Custom response curves per keyboard, with a live preview pad. - CC pickers list standard controller names. Fixed - AUv3 failing to load in some hosts on iOS 18. - AUv3 fits small host windows: compact chrome, a minimum size, and a scrolling surface. - Keyboards and sequencer UI at one row high. - Release bounce when dragging surface controls, and keys triggering through sheets.
Every chart this app is in right now, best position first.
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| Japan· Paid · Music | #60 | New entry | Change unknown | #60 | 1 |
Higher on the chart is better: #1 is at the top.
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Japan · Paid · Music: best #60, latest #60, over 13 snapshots since 8 Oct. No snapshots from 8 Oct to 9 Oct, on 9 Oct, on 10 Oct, on 11 Oct, on 12 Oct, and on 13 Oct; the line joins the snapshots on either side.
Entries, big moves, #1s and new versions we've recorded.