I recently used my Air Navigation Pro for iOS (version 7.2 on iPad) to support a VFR/ULM flight in Italy, and this was the first time I saw a traffic information on the moving map (very accurate indeed, by the way). That surprised me, since I read from the Air Navigation Pro user manual that traffic information could be displayed only “when connected to an ADS-B or FLARM transmitter”. My iPad was not connected to any external device, it took information from iPad internal sensors and cellular internet connection only.
So, my question is: how does traffic awareness actually work? Without external transmitter connection am I still able to see traffic (it seemed so…)? But maybe others won’t see me? Or what?
Thank you for giving me explanation, this is important to me since traffic awareness plays a key role in flight safety.