Quote Originally Posted by def90 View Post
OnX maps work in offline mode, there is no need for a cell signal.
This^.

The US Topo Maps Pro app is also fantastic. You can download whatever maps, areas or imagery you want so you can access without service. I actually like the topo maps on this better than OnX Hunt (although maybe it's closer to OnX Backcountry?). This app is great when bushwhacking on foot in an off-grid area and you need the details. Doesn't have landowner data, etc like Onx Hunt, but the maps are legit and it will record your track.