Free App, sqsl Canvas, Turns Your iPad Into A Eurorack Control Surface



Developer Michal Macura has introduced sqsl Canvas, a free app that’s described as a ‘control voltage playground’ for iPad & Eurorack.

sqsl Canvas – paired with a DC-coupled audio interface – turns your iPad into a touchscreen controller for your Eurorack modular system. Currently supported interfaces are Expert Sleepers ES-8 and Expert Sleepers ES-9.


  • 8 touch strips for setting voltage level sent to outputs (1-8);
  • 8 frames (memory slots) for storing level settings;
  • Crossfading and switching between frames with optional external CV controls;
  • Levels randomization with optional external CV control (gate);
  • Global gain (inverting) with optional external CV control.
  • Output voltage range is switchable: +-5V or +-10V (sliders range is 0-10V).
  • Input voltage controls are clipped to +-5V range.

Pricing and Availability:

sqsl Canvas is available now as a free download from the App Store.


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