Using the app helps keep you motivated to achieve your fitness goals. The Fit Profile app tracks your body composition changes over time and syncs with popular fitness apps. The scale has high precision sensors and electrodes for accurate readings, with a capacity of up to 400lb/180kg. It also measures body weight, body fat, BMI, muscle mass, body water, bone mass, visceral fat, BMR, and fat-free weight. With step-on technology and a clear LED display, it's convenient to use anywhere. Our scale is designed to GE standards and comes with customer support based in Texas. Please avoid using it if you have a Pacemaker or are pregnant.