BCS Master is a free App for anyone who wishes to pass the BCS preliminary MCQ test successfully and to get their dream job in Bangladesh Public Service Commission (bpsc). It was launched 19th September 2016. After launching this App, it has become most important App for BCS candidate for their primary selection in BCS preliminary examination. Within 1.5 months of launching more than 6000+ android user downloaded this App. This App consists of previous year question paper as well as new questions which provide opportunity for the students to test their own level of knowledge by participating in MCQ model tests This android App is also given the opportunity to meritorious students to earn monetary rewards by participating in daily quizzes. BCS rankings of the top scorers in the daily quiz are maintained in the App Itself.