Privacy Policy

1. Information We Collect

1.1 Account Information

When you sign in with Apple, we collect:

• Apple user identifier (to identify your account)
• Your name if you choose to share it (optional)
• Your email address if you choose to share it (optional)

1.2 Learning Data

To provide a personalized learning experience, we collect:

• Word books you create and words you add
• Learning progress and review records
• Study statistics (such as study duration, word count)

1.3 Device Information

We may collect basic device information for service optimization:

• Device type and operating system version
• App version number

2. How We Use Your Information

We use the collected information to:

• Provide services: Create and manage your account, sync your learning data
• Personalize experience: Offer smart review suggestions based on your learning progress
• Improve services: Analyze usage to optimize app features
• Customer support: Respond to your questions and feedback

3. Data Storage & Security

We take appropriate technical and organizational measures to protect your personal information:

• Data transmitted via HTTPS encryption
• Sensitive information encrypted on server side
• Regular security audits and updates
• Strict employee access controls for user data

4. Information Sharing

We do not sell, rent, or trade your personal information. We only share information in the following circumstances:

• Service providers: We may share necessary information with third parties that help us operate our services (such as cloud service providers)
• Legal requirements: When required by law or to protect our legitimate interests

5. Third-Party Services

Our app may use the following third-party services:

• Apple Sign-In: For account authentication
• Apple In-App Purchases: For subscription services
• AI Services: For generating example sentences and articles (no personal identity information is transmitted)

6. Your Rights

You have the following rights regarding your personal information:

• Access: You can view all your learning data within the app
• Correction: You can modify your personal information at any time
• Deletion: You can request deletion of your account and all associated data
• Data export: You can request to export your learning data

7. Children's Privacy

Our services are intended for general users. We do not knowingly collect personal information from children under 13. If you discover that we have inadvertently collected children's information, please contact us immediately and we will promptly delete the relevant data.

8. Policy Updates

We may update this Privacy Policy from time to time. The updated policy will be posted on this page with an updated effective date. For significant changes, we will notify you through in-app notifications or other means.

9. Contact Us