My favorite touch-based controller – Geo Synthesizer Review

The built-in synth is cool, but I tend to use this app as a controller for other synth apps and for external MIDI devices. My only suggestion for improvement would be for the max columns to be 1 more (like GeoShred) and to output MIDI note velocity based on touch pressure, if that's even possible to do well.
Review by voxg50 on Geo Synthesizer.