Notes: landscape, portrait mode and indicators should be placed depends on angle of device while starting application - tested on iPhone. Swipe up to call tune screen for portrait mode Swipe right to call tune screen for landscape mode Disclaimer: AirHorizon is Not FAA approved therefore this application should not be used for real flights. Valeriy Nikolaev - creator of this application is not responsible for any death, injury or damage as a result of using the AirHorizon. Use this application on your device at your own risk!