Privacy Policy - Memorizun

Effective Date: January 15, 2025

1. Overview

Memorizun ("we," "our," or "the app") respects your privacy and is committed to protecting the personal information of our users. This Privacy Policy explains how we collect, use, store, and protect your information when you use our mobile application.

2. Information We Collect

2.1 Audio Data (Microphone Permission)

• Purpose: Speech recognition functionality for pronunciation practice
• How we use it: Audio is processed locally on your device only
• Storage: Audio recordings are NOT saved or stored anywhere
• Sharing: Audio data is never transmitted to external servers or shared with third parties
• Processing: Real-time local processing for speech-to-text conversion only

2.2 User Content

• Learning texts: Content you add for studying purposes
• Study progress: Your learning statistics and achievements
• App preferences: Settings and customization options

2.3 Account Information (Optional)

• Email address: Only when signing in with Google account for synchronization
• Authentication data: Provided by Google Firebase Authentication

3. How We Use Your Information

• App functionality: To provide core features like text memorization and speech practice
• Synchronization: To sync your data across devices (when using Google account)
• Improvement: To enhance app performance and user experience
• Support: To provide customer support and troubleshooting

4. Data Storage and Security

4.1 Local Storage

• Most data is stored locally on your device
• Local data includes your texts, progress, and app settings

4.2 Cloud Storage (Optional)

• Service: Google Firebase Firestore (when you choose to sync)
• Encryption: All data transmitted via HTTPS encryption
• Security: Protected by Google's enterprise-grade security measures

4.3 Security Measures

• Industry-standard encryption for data transmission
• Secure authentication through Google Firebase
• Regular security updates and monitoring

5. Data Sharing and Third Parties

5.1 We DO NOT share your data with:

• Advertising companies
• Data brokers
• Marketing companies
• Social media platforms
• Any other third parties for commercial purposes

5.2 Third-Party Services We Use:

• Google Firebase: For authentication and data synchronization (optional)
• Google Speech-to-Text: For local speech recognition processing
• Google Play Billing: For premium feature purchases (if applicable)

6. Data We Do NOT Collect

• Location data or GPS coordinates
• Contact lists or phonebook data
• Photos or camera access
• SMS or call logs
• Device identifiers for advertising
• Browsing history or web activity
• Audio recordings (processed in real-time only)

7. Your Rights and Choices

7.1 Data Control

• Access: View all your data within the app
• Deletion: Delete all your data at any time through app settings
• Export: Request a copy of your data
• Sync Control: Enable or disable cloud synchronization

7.2 Permission Management

• You can revoke microphone permission at any time through device settings
• The app will continue to function without speech recognition features
• You can sign out to stop data synchronization

8. Children's Privacy

Our app is suitable for users of all ages. We do not knowingly collect personal information from children under 13 without parental consent. If you believe we have inadvertently collected such information, please contact us immediately.

9. International Data Transfers

If you use our app outside of your home country, your data may be processed in other countries where Google Firebase operates. We ensure appropriate safeguards are in place for such transfers.

10. Data Retention

• Local data: Remains on your device until you delete the app or clear data
• Cloud data: Stored until you delete your account or request deletion
• Audio data: Not retained - processed in real-time only

11. Changes to This Policy

We may update this Privacy Policy from time to time. When we make changes:

• We will update the "Effective Date" at the top of this policy
• For significant changes, we will notify you through the app
• Continued use of the app after changes constitutes acceptance

12. Legal Compliance

This Privacy Policy complies with:

• Google Play Developer Program Policies
• General Data Protection Regulation (GDPR)
• California Consumer Privacy Act (CCPA)
• Children's Online Privacy Protection Act (COPPA)

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Last updated: January 15, 2025
Version: 1.1
This policy is specifically designed for the Memorizun mobile application.