Is trefa.app free?
Yes — for small teams of up to 20 participants the app is completely free. For larger leagues, get in touch.
How many people is the app for?
From 3 to 200+ participants in a single league. Tested on corporate leagues at dozens of companies.
Do I need to install anything?
No. Trefa.app is a PWA — it runs right in the browser. On mobile you can add an icon to your home screen for quick access.
How fast can I launch a league at my company?
A couple of minutes. Sign in with Google, pick a tournament, share the link with your colleagues.
Can I bet on any sport?
We currently support ice hockey (NHL, Czech Extraliga, Hockey World Championship) and football (Premier League). More sports are added based on demand.
Are my colleagues' data safe?
Yes. Private leagues are visible only to invited participants. Sign-in is via Google OAuth, no passwords stored on our servers.
Does it work offline?
The app needs a connection to load matches and standings. Push notifications still arrive when the app is closed.
Can I customise the scoring rules?
Yes. The league admin sets points for an exact prediction, the winner, the goal difference and more.