iNavigator

iNavigator is an aircraft navigation app for the iPhone and iPad featuring a moving map view, Horizontal Situation Indicator, a worldwide navigation database, airspaces limits, terrain elevation and weather data.
Full integration with the iOS environment allows creating, modifying, and activating a route, or performing a Direct-to, using simple touches on the screen.
The Nearest page lists airports, navaids and intersection ordered by distance from the current position. The Info page shows information about the selected point, including Metar and Taf report for airports.
The navigation database can be integrated with up to 1000 user-defined waypoints.
iNavigator implements both Route Navigation and Direct-to Navigation and Vertical Navigation (VNAV). The Current Route can contain a maximum of 100 points and can be saved for later use. Up to 100 routes can be stored in the app.
The built-in simulation mode allows to connect the app to Microsoft Flight Simulator via WiFi.
The iPhone/iPad bridge mode transforms your iPhone in a wireless gps for iNavigator running in a non-3g iPad.
iNavigator can run in background and continue to navigate the selected route when using other apps.
Note that continued use of GPS running in the background can dramatically decrease battery life.