Looking at possibly replacing my tired old Garmin GPS-90 with something with a larger screen and recently acquired a wifi-only Samsung Tab-A tablet which does have a built-in GPS chip receiver that doesn't require wifi or cell coverage. No worries about memory, I added a 64GB micro-SD card to it, and it has adequate (2GB) ram for this need. What I'm looking for as a ready-to-go Android App that has most of the offroad trails already in its database. Plug and play so to speak. It MUST be able to run with strictly GPS signals, there are no wifi or cell signals where I wheel. A simple topography map won't do it either, those don't have any trails. If it showed boundaries (as some do) between federal land and other land that would be ideal. Thanks! P.S. I already looked into a suitable iPad and it was horrendously too expensive. A friend is happy with his Samsung Tab A table doing offroad GPS but he's not around for me to ask him what software he's running on it.