Penal is a football pool app for the 2026 World Cup. During EURO 2024 it ran with thousands of predictions and stable live updates. The World Cup edition added multiple pool types and richer statistics. Built with React Native, with its own backend using Socket.io for live updates and push notifications.
Features
- Live scores and statistics
- Match predictions
- Bonus questions per tournament
- Pools with friends (amateur, pro, business)
- Push notifications for important news
- Direct updates via Socket.io
Technologies
React Native
TypeScript
Node.js
Socket.io
MariaDB
Express.js
Docker