The Here I Am GPS App is an app that allow parents to keep up with their kids via GPS location of their child cell phone. It also can be used for friends going out for a night on the town and to locate a lost friend. To utilize the app you must be a subscriber to the web server and have an active device identifier account. The SMS App does not track messages nor phone calls it only records your location and is stored on a server for your convince."Continued use of GPS running in the background can dramatically decrease battery life."