Knob Lab

Smart Rotary MIDI Controller

Free · In‑App Purchases

Now ready for iPhone Duo. Map one knob to up to 8 MIDI destinations and play them all with a single turn. 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 color, 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 colored 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, Dark, Light and Neon themes, and full support for iPhone Duo in portrait and landscape. 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.

  • 4.3
    out of 5
    12 Ratings

• iPhone Duo support: Knob Lab uses the full outer and inner displays, and keeps its knobs clear of the fold when iPhone Duo is partly folded. • Landscape on iPhone. • Clearer messages when a purchase or restore doesn't go through, and a thank-you when it does. • Bug fixes.

The developer, Uri Nachmias, 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 Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

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
Uri Nachmias
Size
69.7 MB
Category
Music
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
  • Unlock all layouts $1.99
  • Nine/Twelve knob layout. $0.99
  • Four/Six Knob Layout $0.99
  • Two Knob Layout $0.99
Copyright
© 2013-2026 Sonic Logic Apps, Uri Nachmias