The 'music' category is one of the very few places left in the app store where you can actually charge a reasonable price for your work and still get traction.

The 'music' category is one of the very few places left in the app store where you can actually charge a reasonable price for your work and still get traction. It's a shame to see something like this show up as a free app, especially with such granular IAPs as separate 'synth pads' and 'synth leads'. It smells a bit of the worst parts of free-to-play. Also, you're risking a future rejection by requiring the camera when the app doesn't use it. Apple has a long history of pulling apps which request specific features that they don't use. The interface is nice, an appealing take on the piano roll.