Eventually you get to a point where you need a detailed itinerary of waypoints, maps, resources etc to help guide a multi-week or multi-month trip.
Currently no app supports this space. it's almost overwhelming to juggle 3 mapping apps (google, apple, gaia), multiple adventure apps , google docs, google sheets and try to run a trip .
And having the content all available offline is key. It's the worst experience being somewhere unfamiliar, with a taxi driver houding you, and you don't know where to go.