Facebook Sign-In is a secure authentication system that reduces the burden of login for your users, by enabling them to sign in with their facebook account, the same account they already use with Facebook.
Google Sign-In is a secure authentication system that reduces the burden of login for your users, by enabling them to sign in with their Google account, the same account they already use with Gmail, Play, Google+, and other Google services.
MapPlus enables you to draw a marker on the map for the location given by the user, it also enables you to customize the map and draw figures like circles, Polygon and Polyline.
