Maybe a little harsh...
There is quite a difference between the full version and this. Met, auto wind vectors, airfield plates, completeness of plog, ability to preconfigure different aircraft and of course the ability to export to GPS. I feel it confirms that SkyDemon was the right planning tool to fork out on and with NATS backing it is likely to ensure data accuracy.
Give the guys a break, it is excellent that a small UK company has built something so complete and smart of NATS to make use of it. Cutting infringements is surely a benefit to everyone in GA to avoid further policing of Air Space. Look at your 100 quid as a donation towards thats.
Here, here for the SkyDemon team.