Most on here are correct. It is very slow in keeping up with movement. There are times that it is hours behind. But there are also times it's only minutes behind. It gets frustrating sometimes but for the most part I like it. I use it everyday. It tells me the vicinity my kids are in at least. It's rare that you ever need the exact address. I know when my kids are at their friends or school or the mall etc. It's way better than not having anything at all. I have to tell my kids to log back on about twice a month too but still worth having.