Great motivation
I was sceptical at first. So far I think it is great motivation to keep yourself committed. You WANT to (at least) get your money back, and you WANT to lose weight, so stick with it until the end! Customer service has always been prompt with a reply. I do wish there were better graphs to show your weight loss... And better statistical data of how much more you need to lose before each phase ends... But overall good app!
For fun Abc about
DietBet: Lose Weight & Win!