If you love hiking, camping, exploring trails and national parks, smartphone apps can be your guides and tools for just about everything short of lighting a fire by rubbing sticks. These five apps for Android and iOS devices will give you coordinates and ideas for the best trails and places around you, all the information you need to plan a trip, and tips on how to manage life in the wilderness. Most of them are available for free, and feature offline functionality so you won't be worried about going out of range. Enjoy!
