I have tried all the family trackers, I would rate this #2. Although it is supposed to be "running in the background," when i check my sons current position, the information is usually several hours to days old. Needless to say, I dont need to know where my son was yesterday. It helps that I can "ping" him fir an immediate location, but he can always say he had his phone off, didnt hear the ping, etc. I have found the app thats most reliable is life360