Knob Lab

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Knob Lab is a powerful MIDI controller for iOS devices.

Price Free
Author Uri Nachmias
Type Controller
Supports Inter-App Audio (IAA)
Rating total: 4.33333 (12), current: 4.33333 (12)
Version 3.0.3
Released 04/19/2014
Updated 09/30/2026
Knob Lab turns your iPhone or iPad into a MIDI controller built around one idea: a single knob can do many things at once.

ONE KNOB. MANY MOVES.
Map a knob to up to 8 MIDI destinations. Each has its own range, direction, channel and colour, so one turn can open a filter, pull the resonance back and bring the delay in over the second half of the sweep.

BUILD YOUR OWN MACROS
• Control Change, Program Change and Pitch Bend destinations
• Name every knob and every destination, so a setup reads at a glance
• Invert any range, or start a destination part-way through the turn
• Rotate completely, snap to middle, pan left/right, or return to origin on release
• A coloured lane for every destination shows where each one is

A LAYOUT FOR EVERY SETUP
Start with one big knob, or unlock layouts with 2, 6 or 12 knobs on a single screen.

PLAYS WITH EVERYTHING
• Music apps on the same device, through Knob Lab's virtual MIDI output
• Computers over Wi-Fi, with a network MIDI session
• A Mac over USB or Bluetooth, with Sonic Logic Central
• Class-compliant USB MIDI interfaces and synths plugged into your iPhone or iPad

MADE FOR TOUCH
Large, precise knobs, a quick guided start, and Dark, Light and Neon themes.

The one-knob layout is free. The 2, 6 and 12 knob layouts are in-app purchases, available one at a time or all together.

Version 3.0.3 release notes

Bug Fixes.

More Apps by Uri Nachmias (1)

Sonic Logic is a modular MIDI controller that allows you to edit and control MIDI setups from your iPad.

Price $9.99
Author Uri Nachmias
Type Controller
Supports Audiobus
Rating total: 4.47058 (17), current: 4.47058 (17)
Released 12/12/2012
Updated 09/30/2026