Organic Maps, uses user specified downloaded Open Street Maps, and work great offline if you like.

Comaps. Because you can download maps and use it offline, hiking tracks included, open source, voice output works now with nostr:npub1235tem4hfn34edqh8hxfja9amty73998f0eagnuu4zm423s9e8ksdg0ht5 (big thanks)

OSMand, it's super powerful, you can download offline maps from OpenStreetMap or use various online maps, I including "satellite/aerial" photo. You have a lot of options and plugins, like adding Wikipedia entries on the map, elevation lines, bike map, ski resort map,.... Anf of course the navigatio...