getupp is a location-based commitment service. Commit to activities that require your presence at a specific location at a certain time, for example, going to the gym after work or being home on time for dinner. getupp verifies and shares whether you keep or break such commitments. Open the getupp iPhone app at the right location at the right time, and your commitment is completed. But if you fail to show up, your commitment is broken, and your failure is automatically shared with your friends on Facebook.

Interesting idea. Hooks into WeightBot on my iPhone too.