It’s Etch a Sketch. Actually it’s Etch a Sketch HD for iPad – the popular and kinda silly toy from way back when, come to the iPad. It looks like a pretty faithful rendering of that old-school toy. Here’s a bit of its App Store description:
The "Official" Etch A Sketch application. Re-live the classic drawing fun of Etch A Sketch on your iPad. Dazzle your friends with doodle masterpieces. Want to start over? Shake the iPad (be careful!) to undo your doodle! Create your own Etch A Sketch cartoons: import a photo from the Photo Album, draw on it, and post to your Facebook account, or save it to your gallery.
– Use the knobs or draw with your finger
– Shake to erase like the Etch A Sketch toy
– Save your drawings and import photos
– Send your doodles to your friends
– Post to Facebook
You can find Etch a Sketch HD for iPad in the App Store now, priced at $2.99.