Komoot
Germany
German route planning app built for hikers and cyclists, with downloadable offline maps and community-contributed trail highlights.
European Alternative to:

Komoot is a German outdoor navigation app founded in 2010, built specifically for hiking, cycling, and mountain biking. Unlike general-purpose mapping tools, it focuses entirely on outdoor sports, giving route suggestions based on your fitness level and preferred terrain rather than just the fastest road path.
The app calculates routes using surface type, elevation gain, and trail difficulty, then presents a realistic picture of what you're getting into before you set off. Turn-by-turn voice navigation works offline once you've downloaded a region, which matters when you're somewhere with no signal. Highlights, contributed by other users, point out viewpoints, photo spots, and trail conditions along the way.
Komoot sells map regions as one-time purchases, so you pay for what you actually use rather than a recurring subscription. There's also a bundle option if you want whole countries or continents. The free tier lets you plan routes and use the navigation on one downloaded region, which is enough to test whether it fits how you travel.