Basic Math PSE Application is created by Pour un Soure dEnfant NGO (PSE) in the purpose of improving the Basic Competency in Mathematics for students at Primary Education, and also of assisting the general people to apply the basic calculation in their daily life. Teachers could use the contents of Basic Maths Application to get practice their students because the contents and various modalities of exercises in this application they will enjoy well their study. Moreover, the contents related basic calculation in small business is really useful for all kinds of people.