Body-Mass-Index is a free lifestyle app available on the iPhone platform. Developed by Lukas Lubbe, this app allows users to easily calculate their Body Mass Index (BMI) and determine if their body fat ratio falls within the normal range.

With Body-Mass-Index, users can simply input their height and weight and tap the "Calculate" button to instantly obtain their BMI. The body mass index is a measure that represents the ratio of body fat to body height. By knowing their BMI, users can gain insights into their overall body fat composition and track their progress towards achieving a healthy weight.

This app provides a convenient and user-friendly way to monitor one's body fat ratio and understand whether it falls within the normal range. Whether you are looking to maintain a healthy lifestyle or are working towards specific fitness goals, Body-Mass-Index can be a valuable tool in helping you track and manage your body fat composition.