Skyby vs Divert Alert

Look up. Skyby tells you what's flying over. Hands-free. Airliners, private jets, helicopters, even the occasional blimp. Skyby shows the plane right above you: airline, aircraft type, altitude, and for airline flights, where it's coming from and going. Leave it running on a desk or windowsill as a quiet radar for your patch of sky, or pull it out on a walk and see what's overhead right now. Set an alert for the planes you love, and Skyby chimes when one flies over. A380 and 747-8 alerts are free. Every catch lands in your logbook automatically. Available across North America, Europe, and much of Asia and the Pacific, with more on the way. SKYBY PRO Aircraft photos, custom alerts for any airline, type, flight, or tail, special livery alerts, a 90-day logbook with search and stats, and a bigger radius. Works on iPhone, iPad, and iPhone Duo. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Divert Alert tracks the National Airspace System via FAA SWIM data, alerting you the moment a flight diverts. Filter by airline, airport, or aircraft type. Receive push notifications in real time. A must for airports, airlines, media outlets, and aviation enthusiasts.