The App has both measurement system : Imperial or Metric. Simply enter your Body Fat Percentage, Weight & Height; and know 🔵 Fat-Free Mass Index (FFMI) 🔵 Adjusted (Normalized) FFMI 🔵 Fat-Free Mass (FFM) 🔵 FFMI Category ➡️  App Features ❶  100% Free app. There is no 'in-app purchase' or Pro offers. Free means absolutely free for life time. ❷  Offline app! You have full freedom to use the app without Wi-Fi. ❸  Beautiful eye-catching design. ❹  App uses little phone space and works