I downloaded this photography app to my iPhone called Lo-mob. The simple description says, "Lo-mob brings lo-fi and photographic experimentations to your mobile pictures." It's so freaking cool! You can either take a photo with the app or choose a photo directly from your phone's library and then it will give you a preview of over 25 different lo-fi analog camera effects to play with.
This is the original photo I started with. I took this at a small neighborhood carnival last week. That is the full moon just to the left of the ferris wheel and the bright light in the upper left hand corner is from the parking lot streetlamp.
And now the following is the same picture but filtered through several of the different lo-mob effects:
I think I may have found my new favorite app!