Cobra, I see that Walter already replied about supporting cloud style sharing. This is exactly the technology that is used by most apps independent of their network as long as they can get to the cloud server. In my case, I use a phone and a tablet, both having cellular and WiFi connectivity. The cloud server does not care if I'm using my cell data or WiFi to pass along sync information as long as I can get to the server. This happens on the ground when I've done my flight plan, aircraft profile, and so on from my phone. When I get in the aircraft where my table is used, everything is there and ready to go. Once I'm in the air, I'm not using the phone anymore. But, the user can have both if needed with Walter's plan of using WiFi between devices in the air. From Walter's reply it sounds like he is already on the path to both of these solutions. Therefore, I'm sure to be one of the delighted customers!