TonePlane app for iPhone and iPad

4.0 ( 2480 ratings )

Music Entertainment
Developer: TheoGames

Free

Current version: 1.2, last update: 8 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.