Observed arrival · 2026-10-28
Roll for Rating: Elo ratings for jiu-jitsu rolls
An app for tracking jiu-jitsu open-mat matches, individual ratings, gym rankings, and nearby rolls.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Jiu-jitsu grapplers and their gyms
- Worth noticing
- A neutral third person records each in-person match, and both grapplers confirm the result.
Field notes
The rating is described as Elo-style: it rises or falls with wins, losses, and draws, with match history kept in the app. The page also outlines gym rankings based on members’ average ratings and an open-mat finder searchable by city, state, and country. It lists puzzles and four interface languages; an Android release is described as coming soon.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
One card from the complete issue