Privacy Policy

1. What Data We Process

• Account: name, email, and password (encrypted by Firebase Authentication).
• Learning: lesson progress, reviews, exercise results, and study preferences.
• Technical: those strictly necessary for session operation.

2. How We Use Them

Exclusively to provide the service: personalize your itinerary, calculate your reviews, and show you your progress. We do not sell data or share it with third parties for advertising purposes.

3. Where They Are Stored

Data is stored in Firebase (Google Cloud) when the installation is connected to Firebase, protected by security rules that prevent access to other users' data. In local mode, your data remains only in your browser.

4. Your Rights

• Export your data from Settings → Account → Export data.
• Delete your account and all associated data from Settings.
• Modify your profile data at any time.

5. Analytics

Analytics is optional and respects your consent. Without explicit consent, no usage tracking is activated.

6. Contact

For any privacy questions, use the contact page.