Is Circular Layout Demo 6.0 a trial Version of the application?

Hi!
I would like to use Circular Layout Demo 6.0 for demonstrating networks layouts on my Windows 7 platform.
What does the Demo in the name stand for since I read somewhere on the internet that this is a freeware and therefore no serials should be used for this application.
On another website I read that one needs to pay $50 to get the serials for this application leaving me confused.
Please help.
