The difference being that you have to play by the FAA rules for all airplane software development. But you have a choice when it comes to mobile development. A

The difference being that you have to play by the FAA rules for all airplane software development. But you have a choice when it comes to mobile development. Android, WebOs, Symbian,... All allow you to do mobile development. The IPhone is not the only game in town. Which is why a move like this could be considered risky by some.