no it is just that if someone has already grabbed a significant area at multiple zooms then all we have to do is download & unpack the zip, & hey presto you have a whole new area at those zooms.
I’ve not heard of Back Country Navigator before, just downloaded the free version. A couple of points, bearing in mind I have not used yet for navigation.
1. It appears to be faster at grabbing map tiles than maverick
2. But it only has the Multimap OS maps, these just do 1:50000. Maverick has access to a MapSource that gives you 1:25000 & that is a winner for me.
3. the paid version of maverick is a lot cheaper, which I have paid for to support it, but not actually sure what extra I get for the paid version.
4. the free version of maverick is unrestricted in use.