This was one of my first iPhone apps that I built. It's really basic, it needs some optimization (it starts getting really slow eventually), but it's kind of cool. Inspired by Koalas to the Max.
Feel free to ask me about any of the code. It's really basic, but there are definitely a few interesting nuances.
I'm use the reload icon from Iconic. I'm using some random Circles art for the background that I found on Google search. If it's yours, I'm happy to attribute it or stop using it. I'm using Magritte's Son of Man as the default image. All other work is mine. Don't use it without my written permission, but feel free to learn from it.