Circle and Square

Kaleidoscope. A collection of random triangles with random colors and alpha value 0.5. The image was generated by a simple iPhone app — a test for an engine for repeatedly drawing into a view (useful for physics and math simulations as well as for generative art).

Source code (objective-C) at GitHub

zipTimer: an iPod/iPhone app for pacing piano practice, cooking, workouts, you name it.