柔道 Technique Library
LibraryBelt syllabusNe-waza

Terms of service

Last updated: 2026-07-04

Acceptance

By using Judo Dojo (website or mobile app), you agree to these Terms. If you do not agree, do not use the service.

The service

We provide a reference library of Kodokan judo techniques with links to official-style video sources and belt syllabi mapped from public federation documents.

The website is provided free of charge. The mobile app requires a one-time purchase through the app store where you downloaded it.

Not professional instruction

Content is for reference only. It does not replace qualified coaching, medical advice, or your dojo’s grading requirements. Practice judo under proper supervision. You assume all risk of injury from training decisions.

Content and accuracy

Technique names and syllabus mappings are based on published Kodokan and federation sources. We strive for accuracy but do not guarantee completeness. Verify requirements with your instructor and official PDFs before grading.

YouTube and PDF links may change or become unavailable; we are not responsible for third-party content.

Mobile app payment

The mobile app is sold as a one-time paid app on Google Play (and App Store when listed). Price, taxes, and refunds follow that store’s terms. We do not process payments directly.

Purchasing the mobile app does not create an account with us and is separate from free website access.

Acceptable use

You agree not to:

  • Reverse engineer or redistribute the app except as allowed by law or store license
  • Use the service for unlawful purposes
  • Scrape or overload our systems in an abusive way

Intellectual property

App design and curated data structure are ours. Judo technique names, federation syllabi, and video content remain subject to their respective owners. Trademarks belong to their holders.

Disclaimer

THE SERVICE IS PROVIDED "AS IS" WITHOUT WARRANTIES OF ANY KIND. TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE DISCLAIM LIABILITY FOR INDIRECT OR CONSEQUENTIAL DAMAGES ARISING FROM USE OF THE APP OR WEBSITE.

Contact

Questions: [email protected].

Judo Dojo

Free on the web. Mobile app: one-time purchase on Google Play / App Store.

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Legal updated 2026-07-04