This is a fun app for drawing, with an element of whimsy. It gives you a spinning "brush" which cycles through colours as you draw. Layer the colours, build it up. The results can be reminiscent of oil pastels.

Supports multi-touch, you can draw with many fingers. Give it to your kids to see what they will surprise you with. I could barely get my nine-year-old off it (or my wife).

The interface is simple: Draw with your finger, shake to erase. Double-tap to bring up a menu for copying, saving, or sharing via email, Facebook, or Tumblr. Send your masterpiece to Grandma!

Coming soon: Varying the brush size by the speed of movement for a more calligraphic look.

Thanks to Daniela, Mina, and Azlen Elza for their art in the screenshots.