The application is designed for service providers on the portal www.RezervujSi.sk in which customers can telephone reservation deadline services (reservation system has a wide possibility to use massages, doctor, dentist, hairdresser, pedicure, tennis court, squash, car tire service, gym, lounge, etc.). Bookings are made quickly and easily right on the phone during a call with a client, for example, for its application to save a phone number.