চর খলফর জবন 4 khalifa ji is a free educational app developed by Royal Bengal Apps for Android users. The app provides users with the life history of Prophet Muhammad (pbuh) and the four khalifas of Islam. It is an excellent resource for Muslims to learn about the lives of the Prophet and the khalifas.

The app includes the stories and biographies of Hazrat Abu Bakar Siddique (ra), Hazrat Omar (ra), Hazrat Usman (ra), and Hazrat Ali (ra). It also contains the life stories of the Prophet Muhammad (pbuh) and his companions. With this app, users can learn about the sacrifices made by the khalifas for the sake of Islam and increase their iman. It is an essential resource for every Muslim to learn about the lives of the Prophet and the khalifas.