This is a Survival Manual which is fully working offline (which is important to survive in a case of some extreme situation) It contains info on how to make fire, build a shelter, find food, heal and other useful content in a case of emergency.
But it is not only for emergencies. It can be also useful for trips to the outdoors, hiking, camping, learning about nature, etc. etc. The various sections include Psychology, Survival Kits, Basic Medicine, Shelter, Water Procurement, Poisonous Plants, Dangerous Animals, Handling Weather, Water Crossing, Direction Finding, etc. etc.
Since all the stuff is available offline, you don’t need a Data Connection or WiFi to operate this app.
A wonderful tool to have on a rainy day – literally!
Android : https://goo.gl/yueVUo