For anyone looking to stay accountable when it comes to food and exercise decisions, this app makes it pretty easy to take charge. Track daily calorie intake by typing in meal/snack info or even scanning a bar code, and factor in a fitness routine to see how well you’re keeping up with meeting weight and health goals. There’s also access to a message board with over 100,000 fellow users, in case inspiration or motivation is needed, and diet tips from the editors at Everyday Health.