Without much intentions, I've put Punkt on the App Store on Monday noon. On the same day, it got shared on Twitter by @suhail and @garrytan which gave it an initial boost. The Product Hunt Launch was also amazing and the product has 325 upvotes today.
But the best thing is that there are so many positive reactions either via email or on the App Store review page which makes me incredibly happy. I never thought that a side project can gain so many users in such a short time.