I did not mention Skydemon because it doesn't have European coverage; only bits. I also think it needs some more market exposure, to iron out various things (according to reports). When they are done, and if they are committed to a constant update schedule, it will be a far better product than Navbox.
What would be very nice if either PocketFMS or SkyDemon would allow you to import your own maps & calibrate them, OziExplorer style, and then use this as the basemap on which all airspace features are drawn
I couldn't agree more