I play Zenless Zone Zero (HoYoverse game), and like most gacha games, they drop redemption codes for free in-game currency - Polychromes, Dennies, etc.
Problem is, these codes are scattered everywhere unless you are checking the official channels all the time ... I kept missing codes because I'd forget to check one source or the code would expire before I noticed.
Got annoyed enough that I decided to build something.
What I built:
zenlesscodes.com - a simple site that aggregates codes from multiple sources
Updates automatically every hour
Shows what rewards each code gives
The whole thing is fully automated. I literally just have to check on it every few days to make sure nothing's broken.
Tech stack (nothing fancy):
Python/Flask on a $3/month VPS
Scrapes data from 3 sources and dedupes them
Cloudflare for CDN + DDoS protection (free tier)
Launched 2 days ago. Completely free with no ads, just scratched my own itch. We'll see if other ZZZ players find it useful.