We've just signed a deal with Vertical Life to license Stone Country guides on their terrific app. Check it out and download to IOS or Android. Buyers of the book will soon find a stickered code inside the book which allows them a free download of the app. It's very functional, clean and easy to use, plus they have dozens of other guidebooks available to use on the app. We hope the app is available from January 2018. Those who have purchased the book already can email us for a code to unlock the app.