Even if you understand the networking side, I have still found the flucard a bit of mixed blessing so far.
Tends to work ok for a bit but then disconnects from the iphone / ipad (probably related to iOS, power saving philosophy or something). Keep needing to reboot card and camera and fiddle about to get it to reconnect. I quite like it when it works but it seems a bit fiddly so far.
Ability to download DNGs without work-arounds (as well as multiple files) would really be appreciated. I wonder if there will be any firmware updates?
A fun toy for sure and great for selfies. But not a polished performer for so far for me. YMMV