Tap, double-tap, drag, pinch, and rotate to make sound.

Contrast is an interactive playground for sound. Add squares by double-tapping anywhere. Squares represent channels of sound which can be manipulated in various ways dragging, pinching, rotating, and tapping.

Concept and programming by Johan Halin.
Design by Jaakko Tuomivaara.

The source code for Contrast is available on GitHub.