Privacy Policy
Welcome to HSK Flashcards. We value your privacy. This Privacy Policy explains how we collect, use, store, and protect your personal information.
1. Information Collection
We may collect the following types of information:
- Account Information: Email address, username when you register.
- Learning Data: Your progress, vocabulary mastery, study time.
- Device Information: Device model, OS version, unique device identifiers.
- Usage Data: App usage frequency, feature usage, crash logs.
2. Information Use
We use collected information to:
- Provide and improve app services
- Sync your learning progress to the cloud
- Analyze app performance and fix issues
- Send service-related notifications
- Prevent fraud and abuse
3. Third-Party Services
This app uses the following third-party services that may collect information:
- Firebase Analytics - For analyzing app usage
- Firebase Crashlytics - For collecting crash reports
- Google AdMob - For displaying ads (free version)
- Google ML Kit - For handwriting recognition (processed locally)
4. Data Storage & Security
Your learning data is primarily stored locally on your device. If you use cloud sync, data is encrypted in transit and stored securely on our servers.
5. Data Sharing
We do not sell, rent, or share your personal information with third parties except:
- With your explicit consent
- As required by law
- To protect our legal rights
6. Your Rights
You have the right to:
- Access and export your personal data
- Correct inaccurate information
- Delete your account and related data
- Opt out of personalized ads
7. Children's Privacy
This app is suitable for all ages. We do not knowingly collect personal information from children under 13.
8. Policy Updates
We may update this Privacy Policy periodically. Continued use of the app constitutes acceptance of the updated policy.
9. Contact Us
If you have any questions about this Privacy Policy, please contact us:
- Email: xiaofuhai@outlook.com