I also have this. And I also think it's just a synthesis of many clues and I guess some people don't perform that same synthesis (my wife for example). Things like "last known direction", "position of sun", "time of day", "this side of the tree is wet but the other isn't", and probably a bit of grid neurons somewhere doing dead reckoning.
I agree. I didn't mean to imply that I stopped using it because of the icon. At some point a did a system refresh and never reinstalled it. Perhaps I will again. Regardless, it's great software.