Privacy Policy

Last Updated: February 24, 2026

1. Information We Collect

We collect the following types of information:

• Account Data: Email address and authentication (via Supabase)
• Subscription Data: Subscription tier, billing information, payment history
• Usage Data: Generation counts, feature usage patterns

2. How We Use Your Information

• Provide and improve our language learning tools
• Personalize your experience (remember language preferences)
• Manage subscriptions and billing
• Track API usage and enforce rate limits
• Analyze usage patterns to improve functionality
• Maintain website security

3. Data Storage

Most data is stored locally in your browser using localStorage. Cloud data is stored in Supabase (authentication and sync data). This means:

• Your preferences can sync across devices when logged in
• Clearing browser cache may reset local preferences
• Logged-in data is stored on our secure servers

4. Third-Party Services

• Supabase: Authentication and cloud data storage
• Payment Processors: Stripe/PayPal for subscription payments
• AI API Providers: Your prompts are processed by AI providers (OpenRouter, OpenAI, etc.) to generate exercises

5. Cookies and Local Storage

We use browser storage to:

• Essential Storage: Required for basic functionality and authentication
• Preference Storage: Remember your language settings and UI preferences

You can clear this data by clearing your browser cache.

6. Your Rights

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

• Access your personal data
• Delete your data (contact us or clear browser storage)
• Export your data

7. Children's Privacy

Our service is not intended for children under 13. We do not knowingly collect data from children under 13.

8. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new policy on this page.

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