Grapple Flows is a free BJJ flowchart app that turns voice notes and videos into visual maps of jiu-jitsu techniques, positions, and transitions you can study, edit, and share.
grappleflows.com · Try it without an account · Community flowcharts · Blog · Instagram · Discord
The same code and data behind the free tools on grappleflows.com. MIT licensed, no dependencies, and each widget drops onto any website with one script tag.
| Repo | What it is |
|---|---|
| bjj-timer | BJJ round timer web component: presets, IBJJF match times by belt, 10-second warning, fullscreen, wake lock |
| bjj-scoreboard | IBJJF scoreboard web component: points, advantages, penalties, automatic tiebreaks, match clock |
| bjj-bracket | Tournament bracket generator: single and double elimination, round robin, teammates kept apart, IBJJF podium |
| bjj-data | IBJJF and ADCC weight classes, legal techniques by ruleset, IBJJF belt requirements, and a BJJ position vocabulary as JSON (data CC BY 4.0) |
No account, no ads. Five of them can go on a gym or event website with a copy-and-paste code (how).
| Tool | What it does |
|---|---|
| BJJ round timer | Round and rest presets, IBJJF match times by belt, fullscreen for the gym TV |
| IBJJF scoreboard | Points, advantages, penalties, tiebreaks, and a belt-timed clock |
| Bracket generator | Single elimination, double elimination, and round robin for in-house comps |
| Weight classes | Every IBJJF and ADCC class in pounds and kilograms, with a calculator |
| Legal techniques | What's legal by belt, age, and gi or no-gi |
| Belt requirements | IBJJF minimum age and time at each belt |
Built by Justin, a software engineer and competitive grappler (2× IBJJF American National Champion, IBJJF No-Gi Worlds Silver Medalist; IBJJF Asia Open Silver Medalist and Bronze Open-Weight Division). The first version, BuddyTape, launched in 2019 after Ffion Davies showed how she planned matches with paper flowcharts. Questions or corrections: hello@grappleflows.com.