How I Got 40 Paying Customers in 6 Months With 0 Dollars Spent On Marketing

The CTO started Pixelixe.com as a side project and launched it at the end of March this year (2019) I spent literally zero dollars on marketing. I worked on this project during my free time (weekends, evenings, holidays, holidays) for approximately 12 months, from April 2018 to March 2019. The overall project cost equals only $13 (domain name from Google Domains) The first thing I did was launching my product on ProductHunt :https://www.producthunt.com/pixelixe/Pixelixe.