I received my second sale for http://supercharge.dev/ today! It was really cool because again there was no marketing done!
Instead, I have been focusing my attention on growing my niche in JavaScript/React based apps! I am writing regularly on Medium. The latest article has more than 6.5k views now - https://medium.com/better-programming/my-all-star-react-stack-3c9b853d4c41
Going forward, I am going to add more features such as email verification, password reset mechanism etc.
I also need to figure out better marketing strategies to bring Supercharge forward!