I know that this is a really simple little app but I really like it. I reminds me of a sort of heavily cut down version of Berna. Admittedly it has a lot less functionality, but I like just playing with the little sound nodes and having fun with it.
A Noise Machine at the app store:
Glad you like it 🙂 I've just uploaded an update for approval, in it you can optionally assign beats per note (you can get vaguely tenori-on stuff going on if that makes sense) which adds some extra depth. Solo note mode helps beat tweaking too. FWIW I'm considering adding upload/download of setups if there is any interest.