Here drive is very good in my area. So far it has been as accurate as my Garmin on my dash. I also have Copilot, which I just added to my phone a few days back. Have not had a chance to test it out, though. I had a copilot ID from when I had an android phone, and it carried over and allowed me to download maps for it free (thanks to a tip from this forum for giving me that info). I liked copilot because it was an off line solution, and still have it installed on my android tablet. Really nice having that 10 inch tablet to use for maps on cross country trips. I can't imagine not having it.