Summary: I really can't review this product because I couldn't get it to work under Windows 8 which is specifically why I purchased it. Only when I received it and looked carefully through the electronic manual did I find an indication it will only work with Windows XP, Vista, and 7. There were no Win 8 drivers available from their website.
Summary: Software is very poor - crashes all the time. Also, I have a track log from one day of my trip that the program can't open and it shouldn't be any different from the other files? Performance is also poor... Lost signal a lot.
Summary: Using Qstarz GPS tracker on a Mac: All in all, I would not recommend buying a Qstarz to a Mac user until they come out with some functional Mac software - it is way too complicated (and seems risky to me for the security of your system). It seems like a good GPS tracker and the Windows software might be good if it works, but for a Mac user, I don't think it's worth the hassle.