Is there a good app for long distance secondary roads?

Thanks, Fizz and GordonThree :). I do have topo apps, but topo maps are too much detail, and too slow to load, for route planning :).

I am looking for the equivalent of AAA state map. They show most of the Forest Service and BLM dirt and gravel roads. Or National Forest maps, for the tiniest dirt roads. I don't know what the Canadian equivalents would be.