Oh, Ranger! Park Finder - you can use this app to easily find parks close to where you live that offer activities that interest you.
EB Walk - acts as a pedometer that tracks your time, distance, and calories burned for your walks. You can use this app to set and reach your goals for walks and hikes in the parks.
Project Noah - allows anyone to easily identify and log wild plants and animals in the parks. Includes a "missions" feature that motivates you to find particular animals and plants in particular parks.
First Aid - has instructions for a variety of common first aid scenarios.
Leafsnap - list of common leaves to identify local plants with the ability to upload pictures of the leaves in order to help identify them.
Chimani - allows you to find parks near your house with features that interest you, as well as offering photos of different parks and maps to the parks.
RA Parking - created by Reserve American, you can make reservations for camping sites in the closest parks with camping to your house.
MapMyHike - tracks your hike times & distances, and allows you to access and share your information online in order to connect with other hikers.
Launch Sites - allows you to search for sites at which you can launch a vessel into a body of water; whether its a boat, canoe or kayak.
Geocaching - comprehensive map of different geocaches that are near to you right now, and helps guide you on your adventure to find them.