Application for OS Android designed for usersof HOMEPORT bike-sharing system. Application displays info, news,FAQ, contacts, map of stations with number of free locks andbicycles. Logged in users can manage their bike-sharing accountwith review of rentals, cards, credit history, possibility tocharge credit, set the power of e-bike, find nearest free lock orbicycle, display the code for the external lock of currently rentedbicycle and provides warning about end of the free rental periodand display of length of current rental. It allows new users toregister into the system.