I'm making a living with Brushes, a painting app for the iPhone (http://brushesapp.com). I started developing it about a year ago, and it's been on sale since August 2008. Sales didn't really take off until January, when the work of one of my artists got picked up by a lot of blogs (and eventually Gizmodo). It was subsequently featured on the front page of the iTunes App Store and that was certainly helpful.

At this point, I'm somewhat reluctant to work on new iPhone apps. There are so many apps on the store that it's far too easy to get lost in the noise. An iPhone game that some friends and I released back in December was DOA. I will admit that I haven't fully cracked the marketing nut yet though.

I'm actually looking for an exceptional graphic designer in the SF Bay area with whom to collaborate on some iPhone/Mac OS X projects if anyone is interested.