I wanted to see how far I could push a $0 zero-backend stack without spinning up a server, paying for hosting, or melting a free-tier database during a traffic spike.

The result is Tap The World — a single shared global scoreboard where every visitor on Earth gets ONE tap, attributed to their country in real time via IP geolocation.

The Stack ($0 Total Cost)

Frontend: One static index.html file (HTML, CSS, vanilla JS)

Database: Supabase (PostgreSQL on the free tier)