Grade progression made readable
The judo federation is one of France's largest (~600,000 members). White-to-black progression is the heart of the practice — your profile records it as the spine, not a footnote.

Kelenz for your sport
From white to black belt: your judogi tells your story — so does your profile.
“From white belt to black, your judogi tells a story — your profile too. Grade progression at the heart, not in the footer.”
The judo federation is one of France's largest (~600,000 members). White-to-black progression is the heart of the practice — your profile records it as the spine, not a footnote.
Combats, wins, losses, ippons, medals: the standard grid is handled natively, by season.
Multi-team rosters (senior, U19 junior, veterans, women's), unique join code, calendar of fights / competitions / grade tests.
Judo isn't a fighter marketplace. It's a dojo, a sensei, uchi-komi partners. Kelenz reflects that community.
From the U19 brown belt prepping for shodan to the head sensei of a regional dojo — here's what Kelenz delivers for judo.
ATHLETE
U17, U19, senior or veterans? Your profile aggregates current grade, career history, fights and medals — judo identity made plain.
COACH
Document every season, every dojo, every grade delivered.
CLUB
Whether you're an association dojo or a pre-pro structure, manage your judokas (senior, U19, veterans, women's) without makeshift fixes.
FAN
The French national team shines. Your local dojo too — Kelenz lets you follow both.
Download the app to join the judokas-and-fans community, or create your dojo workspace — federation, competitions, IJF — free to start, with PRO and PREMIUM plans to go further.
Photo: Joshua Jamias / Unsplash