It calculates how many calories you should eat. Then it gives you a certain number of calories for each meal and snacks. Also if you think you might want to eat more another day it will take off calories from another day/days and add them to that day you want eat more. You can also scan foods barcodes and stuff. It also helps you with intermittent fasting and you can synch your smart watches. Theres a place to add your daily blood pressure and blood sugar tok.

I find it to be more customizable (is that a word?) then my fitness pal.