This app was mentioned in 3 comments, with an average of 1.33 upvotes
someone on here posted an app survival guide. read over it seems pretty good. Credit to u/icechen1 its a good app.
https://www.reddit.com/r/preppers/comments/3le715/i_made_survival_guide_app_on_your_android_phone/
https://play.google.com/store/apps/details?id=com.icechen1.survivalguide&hl=en
I like this one for Android. I want to say I found it through reddit, think someone here wrote it. Runs offline so no data needed, no or next to no ads.
This is an interesting read.
https://play.google.com/store/apps/details?id=com.icechen1.survivalguide