( Piano Assistant ) is a simple app for playing piano and hammer  and sample pad . this app is in early stage of development. 

this app include :

Piano ( key ) - 3 octav

hammer  ( key )  - 3 octav

Se Tar ( Key ) - 2 octav

HipHop kit ( sample pad )

dubstep kit ( sample pad )

daff( sample pad )

you could request for more instrument in comment .

http://exception.xzn.ir/