Army Survival Guide This is the free version of the U.S. Army Survival Guide. It works offline and can be installed on the SD card. Chapters cover: Survival psychology; survival planning and kits; survival medicine; shelters; water and food procurement; firecraft; survival use of plants; poisonous plants; dangerous animals; field-expedient weapons tools, and equipment; desert, tropical, cold-weather, and sea survival; expedient water crossings; field-expedient direction finding; signaling techniques; contact with people; camouflage; and survival in man-made hazards. Illustrated. Easy to use. Awesome. Recommend.
US Marine Corps Close Combat This app costs US$1.99 and has the entire U.S. Marine Corps Close Combat Training Manual - can be used offline. Chapters cover fundamentals of close combat; lethal and nonlethal weapons techniques; hand-held weapons; strikes; throws; chokes and holds; ground fighting; and nonlethal techniques. Searchable, illustrated, awesome. Recommend.
Field & Stream Online This app has hunting, fishing, shootig, ad survival info from Field & Stream. All of the online content is available through this app - videos, photos, how-tos, articles, and more.
Sepsis Central This app lets you quickly find the answers to diagnosing and dealing with sepsis. It has diagnosis, severity scoring systems, treatment, biomarkers, and references.
Survival News This app has news articles about survival, preparation, and reviews of gear that help with that. Not very sophisticated but good for keeping up with survival news.