Application is designed for the latest generation of Rubbee X electric bicycle conversion kit. Application includes the following features:► Real time speed► Real time power output► Real time battery level► Change of power modes (when required number of battery modules is installed)► Change of regenerative braking strength► Blinking modes of rear safety light► GPS assisted speed indication► System status indicator► System temperature indicator► System voltage indicator► Device odometer► Trip odometer (when application is active on-screen)► Average speed indicator► Multiple sensor selection and sensor renaming► Change of imperial/metric units► Three themes - light, dark and blue► Over-the-air updates of Rubbee XApplication is not compatible with older generation devices like Rubbee 1.0 , 2.0, 2.5 and 3.0.This is version 1.0 of the application so if You find any issues - please let us know via the contacts bellow. :)Enjoy the ride !