Check out the Fitbit API.
It's reminders with a sting! Or, goal-tracking with teeth. Mind anything you can graph — weight, pushups, to-do tasks completed — by replying with data when Beeminder prompts you. Or connect with a service (like Fitbit) to report automatically. We plot your progress on a Yellow Brick Road to your goal. Keep all your data points on the road and Beeminder will always be free. Go off the road and you (literally) pay the price.
Connect to API