I produce music, mostly acid house and minimal techno, entirely on iOS (apart from the mastering). I started because I wanted a creative outlet that wasn't my job and didn't involve my laptop. It took about 18 months to get to the point where I was actually happy with the stuff I was making, but then that became a bit of a burden because now I get anxiety if the thing I'm working on isn't coming out as good as the last thing I made. Every now and then I have to forcibly break myself out of the creative process and try something new to ease that self-pressure. Earlier this year I did a remix for another artist's EP, also entirely on iOS.