It's more about keeping you accountable. It suggests you take so many steps or drink a certain amount of water. These goals are able to be tailored to your wants or needs.
The weight loss portion asks your current weight, and how much you want to lose. Then it suggests your calorie intake. It's better than those apps that count calories because it takes into account how many steps your taking, how much your "active" during the day, and your exercise..then it adjusts your calorie needs based on your daily fitness