Privacy Policy

Last updated: 8/20/2025

1. Information We Collect

Personal Information

When you create an account, we collect:

  • Email address
  • Username/display name
  • Profile information you choose to provide

Learning Data

To provide personalized learning experiences, we collect:

  • Quiz answers and performance data
  • Learning progress and statistics
  • Words marked as known or unknown
  • Session duration and frequency
  • Learning preferences and settings

Technical Information

We automatically collect certain technical data:

  • Device information (browser type, operating system)
  • IP address and general location
  • Usage patterns and analytics data
  • Cookies and similar tracking technologies

2. How We Use Your Information

We use the collected information to:

  • Provide the Service: Enable vocabulary training, track progress, and customize your learning experience
  • Improve the Service: Analyze usage patterns to enhance features and fix issues
  • Communicate: Send important updates about the service and respond to your inquiries
  • Security: Protect against fraud, abuse, and unauthorized access
  • Analytics: Understand how users interact with our platform to make improvements

3. Information Sharing

We do not sell, trade, or rent your personal information to third parties. We may share your information only in these limited circumstances:

  • Service Providers: With trusted third-party services that help us operate the platform (e.g., Supabase for database, Vercel for hosting)
  • Legal Requirements: When required by law or to protect our rights and safety
  • Business Transfers: In connection with a merger, acquisition, or sale of assets

4. Data Security

We implement appropriate security measures to protect your information:

  • Encryption in transit and at rest
  • Secure authentication systems
  • Regular security audits and updates
  • Access controls and monitoring

5. Data Retention

We retain your information for as long as necessary to:

  • Provide you with the service
  • Comply with legal obligations
  • Resolve disputes and enforce agreements

You can delete your account at any time, which will remove your personal data from our active systems.

6. Cookies and Tracking

We use cookies and similar technologies to:

  • Remember your preferences and settings
  • Analyze website performance and usage
  • Provide personalized content
  • Ensure security and prevent fraud

You can control cookies through your browser settings, but some features may not work properly if you disable them.

7. Third-Party Services

Our service integrates with third-party platforms:

  • Supabase: Database and authentication services
  • Vercel: Hosting and analytics
  • Google Fonts: Web fonts

These services have their own privacy policies, which we encourage you to review.

8. Children's Privacy

Our service is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us.

9. Your Rights

You have the right to:

  • Access: Request a copy of your personal data
  • Correction: Update or correct inaccurate information
  • Deletion: Request deletion of your personal data
  • Portability: Request transfer of your data to another service
  • Object: Object to certain types of data processing

10. International Data Transfers

Your information may be transferred to and processed in countries other than your own. We ensure appropriate safeguards are in place to protect your data in accordance with this privacy policy.

11. Changes to This Policy

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

12. Contact Us

If you have any questions about this Privacy Policy, please contact us through our feedback system or official channels. We are committed to resolving any privacy concerns you may have.

13. GDPR Compliance

If you are located in the European Union, you have additional rights under the General Data Protection Regulation (GDPR). We process your data based on legitimate interests, consent, or contractual necessity, and you may withdraw consent at any time.