All the low-rating reviews are from people that don't know how to use the app. This app really is the closest digital thing you get to a real disposable camera. I love having to finish your entire film roll before the 3-day developing period starts. I'm used to holding onto real disposable cameras for MONTHS before getting them developed (most places ship the film out so it can take a week to get your photos back) so the 3 day wait period is NOTHING.
The app just get better the more you use it. You learn how to take better photos, which environments look better, when to use/not use flash, etc. and the photos really resemble those of a disposable camera! Of course, nothing is better than actual film, but this app gets close to the real thing.