Mind you this is certainly NOT the case, the Author is seemingly a very nice chap and has all the good intentions in this world. But "free" still means "free",

Mind you this is certainly NOT the case, the Author is seemingly a very nice chap and has all the good intentions in this world. But "free" still means "free", and "tool" still means "tool". It is not strictly speaking a "tool" it is some form of SaaS, you have to connect to that site, authenticate yourself, etc. It is not "free" the sheer moment it asks (indirectly, through your e-mail address) your identification. That there is "nothing bad" in it is another thing.