I would never trust Apple or Google maps to get me anywhere more complicated than a local restaurant. If you're wandering out amongst the logging trucks (or anything that isn't paved, for that matter), try something like Gaia GPS. Gaia allows you load whatever maps you want, including USGS Topo maps. On the dirt-road-loving motorcycle, I paid the $50 (or whatever it cost) to get the topo dataset on the Garmin that rides on the dashboard.

EDIT: BTW, if you're on anything that might be labelled "fireroad" you don't want to be depending on a map app that needs a connection to begin with.