Before the launch of FunRetro I had a open-source and free version running for almost 3 years (funretro.github.io/distributed). The tool was very successful but users were asking me to develop lots of features and I didn't have time to build it. So I decided to develop a premium version and add a month subscription so I could make money and work more on the tool. In November 2017 I launched the MVP of the premium version and had been working on it since them.