great app.
best air navigation on iphone that i tried.
I love the way you can overlay the free geo maps, and the ability to add your own custom waypoints. one thing they need to improve is that the frequency information for some airports is missing, otherwise I would have given them 5 stars. However, consider this application only as an in-flight navigation system. Its really weak on the flight planning side. For weather info consider a different app like aeroweather. Very quick response by email from customer service (important also).
BTW, I read some reviews that complain about not having heading or distance information in flight, elevation data, and ability to select which waypoints to show. All these are available! But some require configuration or loading additional database.
One thing I was disappointed to see in the latest version (4.2) is that rendering the geo maps is slower than the previous version (4.1). Not that it is a big problem. It still finishes the rendering in a couple of seconds, but looks like the speed optimization that they are using in 4.2 is working in the opposite way.
a very iphone user about
Air Navigation Pro, v4.2