A method and system for presenting location-based alerts on mobile devices is discussed. The method includes tracking user locations of users based on mobile device locations of mobile devices associated with the users. The mobile device locations can be determined based on location data transmissions from the mobile devices, with respective transmission lengths based on user preferences. The method includes presenting an interactive map interface for display on a first mobile device of a first user. The interactive map interface can display, based on the tracking, names of locations and the user locations. The interactive map interface can display pictures, each associated with a respective location or a user. In response to a determination, based on the tracking, that a second mobile device of a second user has arrived at a location defined by a geofence, a location notification can be pushed to the first mobile device.