I did consider it, but after reading other reviews complaining about the lack of support and rudeness of replies, I decided it probably wasn’t worth the bother.
It looks to me like one of those plugins where the free version is very limited, in order to force you to buy the paid version. Now I don’t object to paying for something good, and rewarding those who have made it, but it’s the apparent dishonesty of this approach that upsets me.