You can track your data on the FitTrack app or, if you prefer, use whatever app you are comfortable using, such as Apple Health or Google Health. There is an Athlete mode and an Infant mode, and the scale has a 400-pound weight limit. The Dara can measure metabolic age (comparing various stats to provide a “body age”), body fat percentage, body water percentage, basal metabolic rate, visceral fat, subcutaneous fat, body mass index, body fat mass, weight without fat, bone mass, muscle mass percentage, protein mass, protein rate, standard weight, weight control, and, of course, body weight.