Terms of Service

1. Scope

These Terms of Service ("Terms") govern your use of Kanji Mastery (kanji-mastery.com), operated by Yu Kinoshita, Roseggergasse 33-35/2/51, 1160 Wien, Austria ("we", "us").

By using the service you agree to these Terms. If you do not agree, please do not use the service.

2. Service Description

Kanji Mastery is a web-based Japanese kanji learning application. It offers free study tools (browsing, flashcards, tests, drills) and optional paid features (premium analytics) via a monthly subscription.

3. Accounts

• Many features work without an account. Guest progress is stored in your browser session and is lost when you close the tab.
• You may create a free account to save progress permanently. You must provide a valid email address.
• You are responsible for keeping your login credentials secure.
• You can delete your account at any time from your Settings page. This permanently removes all your data.

4. Premium Subscription

• Premium analytics are available for $3 per month (USD), billed monthly through our payment provider LemonSqueezy.
• Your subscription renews automatically each month until cancelled.
• You can cancel at any time. After cancellation you retain access until the end of your current billing period.
• Prices may change with 30 days' prior notice.

5. Right of Withdrawal (EU)

As an EU consumer you have a 14-day right of withdrawal from the date of purchase. You can cancel your subscription within this period for a full refund without giving any reason.

To exercise this right, send a clear statement (e.g. by email) to kanjimastery@gmail.com.

If you begin using premium features immediately after subscribing, you acknowledge that you may lose the right of withdrawal once the service has been fully performed within the 14-day period, in accordance with § 18 Abs. 1 Z 11 FAGG.

6. User Conduct

You agree not to:

• Use the service for any unlawful purpose.
• Post harmful, abusive, or inappropriate content in the forum.
• Attempt to gain unauthorized access to the service or other users' accounts.
• Scrape, crawl, or bulk-download content from the service.

We reserve the right to suspend or delete accounts that violate these Terms.

7. Intellectual Property

• Kanji data is sourced from KANJIDIC2 (CC BY-SA 3.0) and JMdict (CC BY-SA 4.0).
• Stroke order diagrams are from KanjiVG (CC BY-SA 3.0).
• Example sentences are from Tatoeba (CC BY 2.0 FR).
• The application code and design are © Yu Kinoshita.

8. Availability & Warranty

The service is provided "as is" without warranty. We strive for high availability but do not guarantee uninterrupted or error-free operation. We may modify or discontinue features at any time.

Kanji Mastery is a learning aid and does not guarantee any specific learning outcomes or exam results.

9. Limitation of Liability

To the maximum extent permitted by Austrian law, our liability is limited to cases of intent and gross negligence. We are not liable for indirect, incidental, or consequential damages. For paid services, our total liability shall not exceed the amount you paid in the 12 months preceding the claim.

10. Changes to These Terms

We may update these Terms from time to time. Material changes will be communicated via the email address associated with your account at least 14 days before they take effect. Continued use after the effective date constitutes acceptance.

11. Governing Law & Jurisdiction

These Terms are governed by Austrian law. If you are a consumer within the EU, you also benefit from any mandatory provisions of the law of your country of residence. The courts of Vienna, Austria, have jurisdiction, without prejudice to mandatory consumer venue rules.

12. Contact

Questions about these Terms: kanjimastery@gmail.com