I found several mini-reviews about the Math-o-mir on the Internet. However, it must be noted that those sources might not be reliable because some of them might intentionally make better review than deserved, just to get the link back to them… Well, I hope they are honest, and so will I repay to them with links.
http://www.baixaki.com.br/download/math-o-mir.htm (Portuguese, still the best review written to date; thanks Baixaki)
Most shareware/freeware download pages never really test neither review the software. So I decided to award above pages because they actually did this hard work (and newer charged me).
The Math-o-mir is free, and I have the policy to only use free services available.