1. EveryTrail Pro ($3.99)- input your preferred activity, like hiking or mountain biking and this app offers a list if local routes. Included are trail suggestions, maps, and in some cases, audio guides! How cool is the?! The Pro version works without a network connection! So you can get lost without loosing your way. ;)
2. National Parks by National Geographic ($1.99 per guide or $12.99 for complete set)- Time for an All-American Adventure! There are dozens U.S. National Parks, which my dad has taken me camping in most of them. They hold a very special place in my heart and without support from adventurers like you they may disappear! Go and experience them while you can- and use this app's gps-integrated maps with it's points of interest, photo ops, and lodging options.
3. SAS Survival Guide ($3.49)- John Wiseman, former British Special Forces officer wrote a 500+ page survival bible which is a wealth of knowledge. It is now completely available as an offline app! Expert tips that range from first aid to foraging! Super cool feature: a modern-day SOS alert tha concerts text messages into Morse code light signals.
So for all those Boy Scouts and adventures in your lives, here's an easy Christmas gift solution!