Mobile Hajj locator map (pilgrimage)

We need a Hajj System to track my friends or family members or group live locator • Linked to my google account • I can add any google account to my list easily • Added people will approve the requests • The system will show real map who is around me and where they are located • If they are offline it will show the last location and time of the person as a history • The system should have very simple interface The system should be easy to use and we have limited budget and already shared all the requirements needed