This app allows you to paint in air with your iPhone! It uses the built-in accelerometer to estimate how you move the iPhone when painting a stroke in air and the stroke is then displayed on screen.
Accelerometer data alone is not enough information to recreate the stroke, so this application uses physics-based methods to guess how your hand moved based on the acceleration data. As a result, it is fairly easy to paint simple shapes like squares and circles, but more advanced shapes are harder and provides a fun challenge.
If you paint something nice you can use the iPhone's screenshot capability (press "home" and "awake/sleep" at the same time) to save your art piece with your photos.
We look forward to your feature requests on how to make the app better!