Free Tournament Organizer & Generator
Run a tournament off a phone and put it on the wall.
- 60sto a link and a QR code
- 0accounts, ads or caps
- 4formats, in any order
- 0.2sfrom the net to the wall
How it works
Set it up
Name your tournament, add the teams, pick the format. Done in under a minute, no account needed.
Run the day
Put matches on courts, mark what is being played, enter results as they come in. All from your phone.
Put it on the wall
A projector screen that updates itself: tables rebuild, the bracket fills in, the next Swiss round draws itself.
Formats
Round Robin
Every team plays every other. Groups feed into the playoff.
Single Elimination
Lose once and you are out. Classic bracket, straight through.
Double Elimination
A second chance: drop into the losers bracket and fight your way back.
Swiss
Every round pairs like with like. No elimination: every team plays every round.
Whatever is being played
A draw does not care what the ball is. Same day, same phone. Here's the page for yours.
Open a screen
Enter the token from the QR code by the door, or from the organiser screen.
Works for agents too
Whistle.day is also an MCP server — point Claude, ChatGPT or any MCP client at it and an agent can create a tournament, add teams and courts, draw a stage and settle matches on its own.