roll-a-doodle and roll-a-doodle+

Remember the toy you had when you were a kid that let you sketch out crude drawings by turning the two knobs? We designed roll-a-doodle with that experience in mind, but updated it for your webOS device. Tilt your phone to roll a ball around the screen, drawing as it goes. You can change the width, opacity, and color of the line. As an added bonus—you can even draw with a completely transparent line, which certainly takes care of that problem of how to get from one side of the drawing to the other! Your doodles are saved, so you can continue working on your masterpiece later. To erase, simply shake your device or turn it over.

There are two version of roll-a-doodle: the base free version and a paid ($.99) "plus" version. Because it's free, the base version is ad-supported, can only save two doodles, and does not allow you to change the background color or hide the ball. The plus version removes the ads, has 10 doodle memory slots, and allows you to change the background color and hide the ball.

While you can read the FAQs online here, they also are installed on your device with the app.

You can also check the change log to see what changed in the latest version.