WINE / EVIDENCE
Terroir Atelier
A bilingual wine school and atlas: compare real terroirs, take the course, and follow every sensory explanation back to its source.
Web apps
Astro 7 · Cloudflare Workers · D1 · pt-BR / EN
Live · atlas and course
Bolão 2026
Free web app for 2026 World Cup predictions with automatic rankings among friends and groups. Existing participants can still reach groups, predictions and rankings; new sign-ups and pools are closed.
- React 19
- TypeScript
- Cloudflare Workers
- D1
$ trace "bolao-2026"
- match lock
- predictions
- scoring rule
- auto ranking
The problem
A World Cup pool between friends usually runs on a spreadsheet and a WhatsApp group, and the argument about the score outlives the match.
The constraint
Predictions have to lock before kickoff and the ranking has to recompute itself, because nobody wants to be the person keeping score.
The approach
Per-match predictions with a visible lock, scoring stated on screen for exact score, goal difference and winner, invite-only private pools, and a phone-first flow.
The outcome
The ranking updates itself as each match ends. New signups and new pools are closed; existing participants keep access to their groups, predictions and rankings.
MN://WORK
More work
WARDROBE / PWA · Beta
Vestou
A private wardrobe PWA for recording looks, finding combinations and sharing an outfit through a link that expires.
Web apps
TanStack Start · React 19 · Cloudflare R2 · Workers AI
Private beta
PRICES / PHARMACIES
Busca Remédios Brasil
Compares the price of a medicine across 19 Brazilian pharmacy chains and says where each price came from.
Data / analytics
React · Vite · Cloudflare Workers · D1
Live · no account