BBob
WKR
I use both onX and GAIA for the most part and always bring map and compass but not necessarily for backup. Map for the previously mentioned big picture, sometimes I just need to see it all to make a decision. Occasionally if I glass an animal way out there in an area I'm not 100% up to speed on I can put a compass bearing on it, lay that on the map and know exactly where that animal is. It gives me the big picture as to what options I have in getting there and how long it might take me. It doesn't happen often but at times it's a great help and I can't do that with electronics.