Flow UI got featured on muz.li and in just a few hours we got over 100 subscribers! The project is still work in progress and we plan on releasing it on early spring. The design system will be free and open source of course.
Considering that we had roughly 600 visitors that means the conversion rate was around 16%. I think that's pretty good :)
PS: consider giving it a lucky star on Github https://github.com/themesberg/flow-ui