Nowadays, because of the covid 19 pandemic situations, everyone uses face masks and now face masks have become a fashion trend. There are several kinds of fashionable and medical face masks. And also can find several kinds of face mask innovations. Also face masks have a big market capacity. Although, the problem is customers cannot check if the face masks are suitable for them before purchasing. And also when buyers use online shopping platforms, they cannot see the quality of products until receiving them. This problem limits the selling of goods online. The developed research-based project is an Augmented Reality based virtual face mask fit-on Android application. The developed application provides 3D models of face masks, and users can virtually match the face masks with their faces using the mobile application before purchasing them.