Organic Maps is the most private offline map app, it looks prettier than Google Maps and Apple Maps, it leverages data from openstreetmap that you can update easily compared to the competitors, it’s very battery efficient and the best of all its FOSS.
It seems to work well. I tried navigating today and it went fine, it’s just different from Google maps and it’ll take some getting used to.
The dark mode needs more contrast, the map is impossible to discern in the mash of Navy and black.
Dark mode really needs a bit of work for sure.