if you're thinking "people" = anyone outside 20 sq km and over 20 souls then no. that idea is the antithesis of the foraging ethic. tho if we're talking scavenging, go for it.

if you're thinking just you and the guys, you could use atak. it needs a beefy phone for the fun stuff but runs fine on pixel 4a w/ grapheneOS. load in pdf or other maps. all kinds of symbols and markup. bit of a learning curve but good vids on youtube.