Yesterday we had our first sale!
After posting on Reddit about a free tool on the site (meeting cost overlaly) which got 150k views, produced about 150 visitors to the site, of those 7 signed up for a free trial, and of those 1 paid right away.
I emailed each person that signed up from my personal mail, and only one guy replied - they said that they won't be using the tool, that they saw it on the reddit post and just wanted to check it out.