My dear friend and I both had Mapper (free version) last fall/winter, and it was completely accurate, down to exact location, like we could find each other within an isle in a store. ( It made our secret meet ups possible. ;) We both upgraded to this mapper app, and are both continually frustrated. He can rarely open it. And we both have issues with it locating us in completely random places (like a field 10mi away from my house at midnight) lol. Not sure if its the upgraded version or that the app itself got bogged down. Bummer tho