Privacy Policy

This Privacy Policy describes how My Kanji ("we," "us," "our") collects, uses, and protects your personal information when you use our Service at mykanji.app. By using the Service, you consent to the practices described in this policy.

1. Information We Collect

Information you provide

• Account information: email address and password when you register, or email address via Google Sign-In
• Profile information: username and display preferences
• Study data: kanji you add to your study deck, review responses, ratings, and timing
• Feedback: messages you submit through the feedback form

Information collected automatically

• Usage data: pages viewed, features used, and interactions with the Service
• Device information: browser type, operating system, and device type
• Log data: IP address, access times, and referring URLs
• Cookies: as described in our Cookie Policy

2. How We Use Your Information

We use the information we collect to:

• Provide, operate, and maintain the Service
• Manage your account and authenticate your identity
• Calculate and schedule your spaced-repetition reviews
• Track your study progress and display mastery statistics
• Respond to your feedback and support requests
• Send service-related communications (e.g., password reset emails)
• Send newsletter and broadcast emails, if you opt in
• Monitor and analyze usage trends to improve the Service
• Detect, prevent, and address technical issues and abuse
• Comply with legal obligations

3. Data Sharing and Disclosure

We do not sell, rent, or trade your personal information. We may share your data only in the following circumstances:

• Service providers: third-party services that help us operate the Service (e.g., hosting, analytics, error tracking, email delivery), who are bound by confidentiality obligations
• Legal requirements: when we believe disclosure is necessary to comply with applicable law, regulation, legal process, or governmental request
• Safety: to protect the rights, property, or safety of My Kanji, our users, or the public
• Business transfers: in connection with a merger, acquisition, or sale of assets, your data may be transferred as part of that transaction

4. Data Retention

We retain your account information and study data for as long as your account is active or as needed to provide the Service. If you delete your account, we will delete or anonymize your personal data within 30 days, except where retention is required by law.

Aggregated and anonymized data that cannot be used to identify you may be retained indefinitely for analytics and research purposes.

5. Data Security

We implement industry-standard security measures to protect your personal information, including encrypted connections (TLS/SSL), secure password hashing, and access controls. However, no method of transmission over the internet or electronic storage is 100% secure, and we cannot guarantee absolute security.

6. Your Rights

Depending on your jurisdiction, you may have the right to:

• Access the personal data we hold about you
• Request correction of inaccurate data
• Request deletion of your data
• Object to or restrict processing of your data
• Request a portable copy of your data
• Withdraw consent for optional processing (e.g., marketing emails)

To exercise any of these rights, contact us at privacy@mykanji.app. We will respond within 30 days.

7. International Data Transfers

Your data may be processed and stored in countries other than your country of residence. By using the Service, you consent to the transfer of your data to such countries, which may have different data protection laws.

8. Children's Privacy

The Service is not directed to children under 13. We do not knowingly collect personal information from children under 13. If we become aware that we have collected such information, we will take steps to delete it promptly. If you believe a child under 13 has provided us with personal information, please contact us.

9. Third-Party Links

The Service may contain links to third-party websites or services. We are not responsible for the privacy practices of those third parties. We encourage you to review their privacy policies.

10. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of material changes by posting the updated policy on this page with a revised "last updated" date. Your continued use of the Service after changes become effective constitutes your acceptance of the updated policy.

11. Contact

Questions about this Privacy Policy? Contact us at privacy@mykanji.app.