Privacy Policy

Last updated:

1. Information We Collect

NihongoNeko is a Japanese learning application that uses Google OAuth for authentication. We collect the following information:

  • Google Account Information: When you log in with Google, we receive your email address, name, and profile picture from Google's OAuth service.
  • Learning Progress: We store your vocabulary learning progress, including which cards you've studied and your performance ratings (Good/Again).
  • Usage Data: We track your learning patterns to improve the spaced repetition algorithm.

2. How We Use Your Information

We use your information to:

  • Provide personalized learning experiences through our SRS (Spaced Repetition System) algorithm
  • Track your progress and adapt the difficulty of vocabulary cards
  • Generate statistics about your learning journey
  • Improve our application's functionality and user experience

3. Data Storage and Security

Your data is stored securely using industry-standard practices:

  • All data is encrypted in transit using HTTPS
  • User passwords are not stored in our database (handled entirely by Google OAuth)
  • Learning progress data is stored in a secure PostgreSQL database
  • We implement appropriate security measures to protect against unauthorized access

4. Third-Party Services

We use the following third-party services:

  • Google OAuth: For user authentication. Google's privacy policy applies to their services.
  • Jisho Dictionary API: For vocabulary data. We do not share your personal information with Jisho.
  • Cloudflare: For content delivery and security. Cloudflare's privacy policy applies to their services.

5. Your Rights

You have the right to:

  • Access your personal data
  • Request correction of inaccurate data
  • Request deletion of your account and associated data
  • Export your learning progress data

To exercise these rights, please contact us at [email protected]

6. Data Retention

We retain your data for as long as your account is active. If you delete your account, we will remove your personal data within 30 days, except where we are required to retain it for legal or regulatory purposes.

7. Changes to This Policy

We may update this privacy policy from time to time. We will notify you of any significant changes by posting the new policy on this page and updating the "Last updated" date.

8. Contact Us

If you have any questions about this privacy policy, please contact us at:

Email: [email protected]