From White Belt
to Black Belt
4,500+ technique videos. Complete USJF curriculum. AI-powered coaching. The training platform built at Nakano Judo Academy — now for every dojo.
Platform
Train Smarter
4,500+ Curated Videos
Kodokan masters, Olympic champions, competition archives, and instructor tutorials.
AI Sensei
Get technique breakdowns, training advice, and personalized coaching — 50 messages per day.
Track Every Session
Log mat hours, set session goals, and watch your judo journey unfold over years.
Curriculum
Everything You Need to Learn Judo
From your first class to your black belt exam.
Belt Requirements
Complete USJF curriculum for all 21 ranks.
Kata Library
All 9 official Kodokan kata with video links.
Exam Prep
Shodan and Nidan checklists.
Vocabulary
38 Japanese terms with kanji.
For Dojo Owners
Free Tools for Dojos
Built to grow judo — not to charge fees.
Class Scheduling
Manage 50+ classes per month.
Member Management
Rosters, waivers, and attendance.
Commerce & Payments
Plans, donations, and revenue sharing.
For Families
One Account. Every Child's Journey.
Manage multiple kids, sign waivers once, and see the app as they see it.
Family Accounts
Manage multiple children from one parent account. Track each child's schedule, attendance, and belt progression.
Kid Mode
Preview the app exactly as your child sees it. Age-appropriate AI responses for junior judoka.
Directory
Find Your Dojo
Search 500+ dojos across the US. See schedules, instructors, and join with one tap.
Our Story
Built at Nakano Judo Academy
Judoka.ai started as an internal tool for Nakano Judo Academy in Santa Clara, California. After years of refinement — tracking sessions, logging mat hours, building the curriculum — we opened it to dojos everywhere.
Now serving dojos worldwide. Always free for dojos. Always free for students.