The first portable electronic field guide for Yellowstone and Grand Teton National Parks. App-based with over 1000 pictures and descriptions. Identify the most interesting and common features of the critters in Yellowstone and Grand Teton National Parks. It’s like having a dozen books on your smart phone!
No internet connection required.
The app is free with limited items in each category. All content can be unlocked with an in-app purchase of $.99