This app's food database contains over 3 million different kinds of foods and all of their nutritional information.

When the user enters current weight, lifestyle and period of time they want to achieve their goals in, MyFitnessPal works out how many calories can be consumed to achieve said goal.

MyFitnessPal works with Fitbit, Jawbone and many other fitness trackers.

It's possible to follow friend's progress and comment on their profile.

MyFitnesspal has a website and apps for iPad, iPhone and Android so it can sync data between all devices.

This app lets users decide weight loss, calorie, exercise, and nutrient goals.

Depending on the user's height, weight, and gender, MyFitnessPal is able to accurately predict how many calories have been burned.

MyFitnessPal can share information between RunKeeper and MapMyFitness.