I'm 99% sure that you mean to define Backcountry navigator, but which app will you use for vehicle navigation if the former is becoming dedicated to navigation on foot/skis and the like?
There again, with the weather as it is in the north of America you probably don't need anything other than skis at present!

Currently, I continue an interest in "where the maps come from in the first place".
I expected this to be fairly straight forward but it isn't; there are regional considerations (basically why produce and market maps for a small, non-populated area when there are big places to hand) for instance. And then there is the business aspect, whereby just because there is an app out there doesn't mean that they own and supply the actual map data - this relates to the growing popularity of the open source OSM, but it applies to others also.
Within the business "model" there is the market for automobile Sat Nav which is massive compared with some others such as motorcycles, although I could envisage a day when all new bikes come fitted with a built in Sat Nav system just as has occurred with cars.
Here is but one example of the way things are, but it is by no means up to date or complete as the discussion page associated with it shows.
Comparison of web map services - Wikipedia, the free encyclopedia

Talk:Comparison of web map services - Wikipedia, the free encyclopedia

And, that table hardly starts to consider the application of digital mapping to mobile devices with a built in bias therein toward OSMAnd at present (maybe the mobile contribution was made by someone associated with OSMAnd, who knows?!!)

__________________
Dave