TonePlane app for iPhone and iPad
4.0 (
2480 ratings )
Music
Entertainment
Developer: TheoGames
Free
Current version: 1.2, last update: 8 years agoFirst release : 24 Jul 2014
App size: 520 Kb
From left to right, the pitches increase by octaves.
From top to bottom, the pitches decrease by fifths.
Have fun.