What the hell’s a FlightRadar24 Pro? Well, it “turns your phone or tablet into an air traffic radar” and lets you “see airplane traffic around the world in real-time”. Interesting. And it’s only 69p this weekend for both iOS and Android.
Android version requires 2.2 (Froyo) or above.
iDevice version demands iOS 4.3 or above.
(Thanks to Foka002 at HUKD)