MyFitnessPal - Track the number of calories that you consume each day with MyFitnessPal. The app also lets you create a diet and track the exercise that you complete each day whether it's walking, running or some other type of program.
Timebug - Productivity & life management app to guide self discovery
Lose it! - Snap a photo of your food to get nutritional facts
Habit Challenge - Habit Challenge is an elegant mobile app that helps you to create new daily routines and keep you on track.
Noom - Get life-long weight-loss results
Youtine - Develop self-discipline, without using an app.