This is a very handy app designed to help active cyclists stay on track and lose weight. Three basic calculators will help you keep your focus on what is important. Plus the Interval trainer will be there to time every effect perfectly. This app includes a BMI Calculator, Heart Rate Zone Calculator, Power Zone Calculator, and an Intervals Training Timer for every category needed to improve: Sprinting, Climbing, Pedal Efficiency, Threshold and Endurance. You can easily achieve your ultimate goal and becoming a leaner, faster and stronger rider with the help of the Weight Weenie 4 cyclists App. Now also includes is a custom interval timer.