Chimani, a developer of Apps to five National Parks, is making them free for National Parks Week. The Apps are usually $4.99 and are rated 4+ stars.
Once installed, the Apps are entirely self contained and no not need to access your data plan (altho they can use the GPS)
The description of the Grand Canyon App:
"The Chimani Grand Canyon app includes over 250 unique points of interest (POIs), a 45+ minute auto/audio tour,
high resolution, GPS-enabled maps, regularly updated ranger-led events, 35 hiking trail descriptions, bicycling guide, restroom locations,
over a year's worth of sunrise and sunset times, a free shuttle bus schedule and over 150+ photographs."
The 5 Apps cover
Grand Canyon National Park
Yosemite National Park
Acadia National Park
Cape Cod National Seashore
Cuyahoga Valley National Park
Once installed, the Apps are entirely self contained and no not need to access your data plan (altho they can use the GPS)
The description of the Grand Canyon App:
"The Chimani Grand Canyon app includes over 250 unique points of interest (POIs), a 45+ minute auto/audio tour,
high resolution, GPS-enabled maps, regularly updated ranger-led events, 35 hiking trail descriptions, bicycling guide, restroom locations,
over a year's worth of sunrise and sunset times, a free shuttle bus schedule and over 150+ photographs."
The 5 Apps cover
Grand Canyon National Park
Yosemite National Park
Acadia National Park
Cape Cod National Seashore
Cuyahoga Valley National Park