I'm not familiar with it, but I did look at the website. Four comments, most of which are over 10 years old (and not complementary). It's apparently written around ACI 318-99, which is been superseded about four times.
My question is; "Why are you interested in such a minor player in the software market?" It seems like there are any number of programs that can design concrete columns, among many other concrete items. Just because this is cheap, doesn't mean you're saving any money.