Gaia is far and away the best navigation app, in my opinion. If you get a paid subscription there is an incredible variety of maps available. It is even possible to format and load your own custom maps and images. Gaia works quite well internationally. Back (pre covid19) when we could still travel abroad, I was able to use Gaia very successfully in Ecuador, Mexico, and France.

I'm not sure what the "UX misstep" problem is that chaosmagnet refers too? I use Gaia regularly with my iPhone, locations services "OFF except when using app", and haven't had any issues that interfere with my activities.

Noted Alaska adventurer Luc Mehl has used Gaia on some very serious Alaskan backcountry trips. His website has some great tutorials on taking full advantage of the features of Gaia.