Data Driven Diet is a simple way of using Data to power your diet. First you set up a number of rules, each connected to a weight threshold and each either aimed at an improved diet or healthier lifestyle.
For example you might want to trigger a 'No Pizza' rule when you exceed 80kg or a 'Morning run' rule when you exceed 100lb. When you gain weight more rules are activated. When you lose weight fewer rules are activated, so you are rewarded.
Consult a medical professional to tailor a set of rules to your health circumstances. On iPhone and iPad.