“The core engine is written in Kotlin... Next.js is what the front end is written in. I use Brevo for transactional emails, I use AWS EC2 instances to host the back end, Netlify to host the front end, Stripe for payment processing and that's about it. A lot of profit, it's like 39 out of $40,000 is profit.”

Run A Boring Stack Solo And Watch $39K Of $40K Drop Straight To Profit

Angus runs the entire business solo on a deliberately boring stack — Kotlin backend on EC2, Next.js on Netlify, Brevo, Stripe — with no team, no ads, and no growth tools. The result is roughly 97% margins, with $39K of every $40K in monthly revenue dropping straight to profit.