It's time to make up those New Year Resolutions again. For a lot of people, that will probably include going to the gym. Enter the "GymPact" app. You set which days of the week you pledge to work out. And then how much you're willing to part with if you don't go. That's because if you don't check in by GPS on your days... your credit card gets charged. If you do meet your goals, you get a slice of the money paid out by the people who didn't. Get more info on the app's web page here.