Shameless plug: start with https://comaps.app/ . Recently I helped a woman find an address because she told me there's some problem with her internet connection.
I think having an offline map of at least the region you live in can come in handy. In fact, I carry an old phone with impressive battery life (Samsung Galaxy A10) and offline maps installed on it so I don't get lost.
Paper maps (or printed) is mandatory when you are on track in mountains. Offline digital maps are useless in -30 when phone battery and powerbank are dead.
Great to see more offline map projects. Is this any different than Organic Maps currently? The about page indicated this project is a continuation of Organic Maps due to issues with that project, not sure if there are new features or if it will be the main project going forward.
I think having an offline map of at least the region you live in can come in handy. In fact, I carry an old phone with impressive battery life (Samsung Galaxy A10) and offline maps installed on it so I don't get lost.