Application for OS Android designed for users of HOMEPORT bike-sharing system. Application displays info, news, FAQ, contacts, map of stations with number of free locks and bicycles. Logged in users can manage their bike-sharing account with review of rentals, cards, credit history, possibility to charge credit, set the power of e-bike, find nearest free lock or bicycle, display the code for the external lock of currently rented bicycle and provides warning about end of the free rental period and display of length of current rental. It allows new users to register into the system.