A great and easy to use app! It makes a lot of fun. Everything is well designed, except the fact that only wav/aac can be recorded.
Instead of wav recording, it would be nice if there were a recording option for touches. 10 tracks for each finger could handle every touch. A track editor to move, delete or change the touch buttons and finally an export to wav would cool as fuck.
I would love to see this feature in your next release. ;)