Choke

ProtoLayer

About this app

Choke is the simplest, most open Brazilian Jiu-Jitsu (BJJ) scoreboard: score matches in real time and publish them instantly so anyone can follow along live.

Built for referees, coaches, academies, and tournament organizers who want fast, reliable scoring with zero hassle.

⚡ REAL-TIME SCORING
Log every action with a tap: takedowns (2 pts), guard passes (3 pts), mount and back takes (4 pts), advantages, and penalties. The score updates instantly.

⏱️ MATCH TIMER
Configurable match duration with a second-by-second countdown, so timing is never a problem at the scoring table.

📡OPEN & DECENTRALIZED
Every match is published to the Nostr network, so the data is open, verifiable, and accessible from any compatible dashboard. Follow bouts live from the web.

🔑 NO ACCOUNTS, NO FRICTION
No sign-up required. Your identity is generated on your device at install. You can delegate scoring of a match to your team using temporary keys, without ever sharing your private key.

🌍 IN YOUR LANGUAGE
Available in English, Spanish, Portuguese, and Japanese.

🆓 FREE & OPEN SOURCE
Choke is 100% free, with no ads and no trackers. Its code is open and auditable.

Whether you're refereeing a tournament, training at the academy, or projecting matches on screen for the crowd, Choke puts a professional scoreboard in your pocket.

Download Choke and take BJJ scoring to the next level.

What’s new

• The screen now stays awake between fights while you watch a scoreboard — no more unlocking your phone at the scoring table.
• Finished matches now leave the scoreboard once their results expire, so stale scores no longer linger on screen.
• Choke now also runs on macOS: the desktop build (Apple Silicon & Intel) is available from our GitHub releases, alongside Linux and Windows.