The Chimani Guides are really first rate apps at US$4.99 - $9.99, but in celebration of National Park Week, they are free from now until April 24. A good deal at the regular price, they are certainly worth a download for free.
There is one app for each of these parks: Arcadia, Cape Cod National Seashore, Yosemite, Cuyahoga Valley and the Grand Canyon
