Off price deduction method for mobile application by vote in mobile platform

PURPOSE: An application discount supplying service method on mobile platform is provided to offer information of a discounted application through a social network driven with smart phone application. CONSTITUTION: A server offers information of a predetermined vote period or of one or more vote object applications into a smart phone(S110). The smart phone displays information, which is the one or more received vote object applications information(S120). If a user selects one application, the smart phone offers the selected value to the server(S130). The server counts the vote result according to the selected value. The server selects one or more applications out of the vote object applications(S140).