Link to the app here.
It was really easy to set up, just give your project a name and you were away. What I liked about it especially is the fact that it gives you an "onion skin" of the last shot you did, so you can position your next movement more accurately.
You can take shots really easily by touching anywhere on the screen and when you are finished, it can save out to the camera roll of the iPad so it is available for upload and sharing.
Here is my second attempt today, with "help" from Eric and Malcolm who couldn't resist offering advice!!
These are silent first experiments. The app allows you to add sound effects that are preloaded or you can record your own sounds, so this will be my next direction.