Making a fitness resolution this year? You might want to check out the app GymPact. Through the app you set up your resolution—say going to the gym three times per week—and how much you’ll pay if you don’t go—say $5 for every missed session. Then simply check in at the gym to avoid paying your fees. If you do skip a session, GymPact will charge you the amount you set up. If you go to all of your sessions though, you’ll get cash rewards funded by those who didn’t make it to the gym. Once you hit $10, you can get a payment from GymPact via PayPal.

Not motivated by money? Check out these other apps to help you stay fit.