Body Fat Calculator Pro is a comprehensive tool available on the iPhone platform that enables users to accurately calculate their body fat percentage and lean body mass. It offers the convenience of tracking measurements to monitor fitness progress effectively. The program includes a tutorial on the precise methods and locations for measurement using a caliper. Users can choose between two scientifically proven formulas - the Jackson & Pollock 3-fold method for a quick approximation or the Jackson & Pollock 7-fold method for more precise results. Moreover, Body Fat Calculator Pro supports Apple Health export, enhancing its usability and integration with other health tracking tools.