From now on,you can practice the scale easily by IPHONE or IPAD anytime if you want.
The application can switchover the Tone or Letter mode.
You do not need to study other using ways,because it is so easy.
This application can help you walk on a master road
1 through wifi sync your favorite accompaniment
2 share your accompaniment to everyone
3 downloaded accompaniment of users to share
4 new interface supports IOS7