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TonePlane app for iPhone and iPad


4.0 ( 2480 ratings )
Music Entertainment
Developer: TheoGames
Free
Current version: 1.2, last update: 7 years ago
First 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.