Flight-Tracker app for iPhone and iPad

Flight Tracker is an app for keeping your relatives informed of your location when you are flying. You log into the app just before the flight and set an alert for your family, and they will be receiving hourly updates of your flights location via email.
Features:
SOS Signaling
Broadcast an SOS signal from wherever you are at.
Real-time Tracking
Know where the flight is at the touch of your fingertips.
The Last Message
Some form of closure is better than no closure at all. Lets just hope we do not have to use this.
Crisis Notification
Be in the know, real-time, on the first sign of trouble.