It's... okay?
In fact no, it's by-far the best Google Maps alternative I've used so far, this clears OsmAnd+ easily. However, it still has quite a way to go. I can see why it's awesome for hiking, but this has some interesting side effects.
For example, I noticed right away that it cannot search for specific places in non-downloaded maps. This might seem like a "duh", but the maps around here seem extremely fine-grained, so I need to first search for the town, then download the map, then search for the street and address, then I can navigate. Oh no wait I cannot, I need to also download maps for all places in-between.
This makes complete sense for hiking, where I'm confined to a - comparatively - small area and want to pre-download this, at all times, always. And also don't really "search" for a specific address to route to beforehand, rather for a general area and then just get the map.
And of course, the quality of navigation is... adventurous. But I expected that, that's just something GMaps has a huge starting advantage at, and this clears what OsmAnd+ does and honestly feels better than Apple Maps, too. Though that's maybe not high praise, as in this area of the world Apple Maps is like getting lost only you use a smartphoen to do it.
Still, it's the second best I've seen. And for an open source app, that's an insane feat.
Hugely impressed, TY OP. Never heard of this before.