Does anyone use those iPhone Naviagation Apps
There is an app on the appstore called AirNav, I downloaded it out of interest and well its pretty much a moving map for VFR navigation, but I won't use it.
I am interested if anyone uses them in the air, what is the accuracy like, with them, are they usable as a tertiary source to Dead Reckoning and feature following and Radio Navigation?
Also whats the legality of these things?