This is simple web browser app showing map from adsbexchange.com website and simple small compass for orientation. There is also manual with explanations and settings that will be set when the app is launched.

If it's not working make sure you have updated application called "android webview" in google play store.

„Welcome to ADSBexchange.com, the world’s largest co-op of ADS-B/Mode S/MLAT feeders, and the world’s largest public source of unfiltered flight data. Access to worldwide flight tracking data opens up a whole new world of flight monitoring for hobbyists, researchers, and journalists alike.“ - www.adsbexchange.com