How can I install the app to another device?

As long as you stay on the same OS, you will be able to install Air Navigation Pro up to maximum 3 devices without further costs.

Make sure to log in using your registered iTunes/Google account.

From your iOS device, go to Settings > Apple ID, iCloud, Media & P... > Check that you are logging in your registered iTunes account.

Go to Profile > Purchased > Air Navigation Pro > Download it

Another way is from the App Store, go to Search and type Air Navigation Pro. Then tap to install.

Android:

Go to Play Store, search Air Navigation Pro, then you'll find our app and tap on 'Install'