GREAT NEWS: Our advertising-support has reached a point where we can afford to offer the app for free. This app is FREE for ALL AirBoss membership (www.airnav.com/airboss) can still be purchased from the app and renewed from the app. The app enables quick searches for aviation fuel prices, FBO information, and critical runway details. The information is pulled from the AirNav website, and can be stored on your phone for in-flight use. However, the app does not include the web site in its entirety.