This app helps you finding campsites, especially if you do not want to carry a book with you. Unfortunately in some areas (f.ex. San Francisco) there is only one campsite listed, where more are actually available. The search function definetly needs improvement and the navigation system started localising my phone always in Africa (this does not happen with google maps). The links to the websites of the campsites are working fine in Safari and adresses are displayed in the app. For a trip around the US this app is fine, you just need a good internet connection.