First problem is - it kills your battery in no time at all. Uses lots of power on both (or all) phones. Secondly; There was a moving tracking delay when I was watching my phone and driving of a good six to eight blocks. I like accuracy. This program has no idea what that is. It also showed me a mile from the house when stopped while it showed my wife in the street at work - 500 yards from her job. Not even worth it for free.