iRelease, Free! (paid version with extra features for $12.99)
How many times have you been heading out to a shoot when you realized that your folder of model releases is still on the table at home? OK fine, so this app isn’t going to be useful for the majority of iPhone users, but I love it. Customizable model releases on my iPhone, and when they’re completed I can email them to myself and the model. Couldn’t be easier or more convenient.