CrossProcess is a great, dead simple photo filtering app for iOS. It randomly applies one of five different filters to your photo, and the results are often beautiful. I started playing around with it in Uganda, double and triple filtering shots.
The cumulative effect leads to tremendous data loss. People disappear. Places are rendered unrecognizable. Check out a couple samples after the jump.
Acholi Quarters, Banda, Uganda
NUPECA Co-operative Office, Banda, Uganda