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Privacy Policy
Last updated: August 10, 2025
At Yuyan, we take your privacy seriously. This Privacy Policy explains how we collect, use, and protect your personal information.
1. Information We Collect
We only collect information necessary for the app to function properly:
1.1 Account Information
- Email address (for authentication via Clerk)
- Unique user identifier
- Account creation date
1.2 Usage Data
- Learning progress
- Scores and learning statistics
- App preferences (theme, language)
1.3 Technical Data
- Device type and operating system
- App version
- Anonymized error reports (via Sentry)
2. How We Use Your Data
Your data is used exclusively to:
- Manage your account and authentication
- Save your learning progress
- Improve the app and fix bugs
- Manage support subscriptions (if applicable)
- Send you important notifications about your account
3. Third-Party Services
We use the following third-party services, each with their own privacy policy:
| Service |
Purpose |
Data Shared |
| Clerk |
Authentication |
Email, user ID |
| RevenueCat |
Subscription management |
User ID, subscription status |
| Sentry |
Error tracking |
Anonymized technical data |
| Expo Updates |
App updates |
App version, device type |
4. Data Storage and Security
- Your data is securely stored on our service providers' servers
- We use encryption to protect sensitive data
- Access to data is strictly limited and controlled
- We never sell your personal data
5. Your Rights
Under applicable privacy laws, you have the following rights:
- Right to Access: Request a copy of your personal data
- Right to Rectification: Correct inaccurate data
- Right to Erasure: Request deletion of your account and data
- Right to Data Portability: Receive your data in a structured format
- Right to Object: Object to the processing of your data
6. Data Retention
- We retain your data as long as your account is active
- Progress data is retained to maintain your learning history
- After account deletion, your data is erased within 30 days
- Anonymized technical logs may be retained for up to 90 days
7. Children's Data
The app is not intended for children under 13 years old. We do not knowingly collect personal data from children under 13.
8. International Data Transfers
Your data may be transferred to and stored in countries outside your country of residence. We ensure appropriate safeguards are in place for such transfers.
9. Cookies and Similar Technologies
The mobile app does not use cookies. Data is stored locally on your device or on our secure servers.
10. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any material changes via email or through the app.
11. Contact Us
For any questions about your personal data or this policy, please contact us:
12. Complaints
If you have concerns about how we handle your personal data, you have the right to lodge a complaint with the CNIL (French Data Protection Authority): www.cnil.fr