Privacy Policy

This Privacy Policy describes how Heidelberg Catechism — Learn, Memorize & Grow in Faith (the "App") is operated by Q.Z.L Corp. ("we", "our", or "us") and explains how information is collected, used, and disclosed when you use the App.

1. Information We Collect

The App does not directly collect, store, or require users to provide personally identifiable information such as:

• Name or email address
• Phone number
• Precise location or GPS data
• Contacts, calendar, or media files

The App operates as a standalone application without requiring user authentication or account creation. Your study progress and preferences are stored locally on your device, not on our servers.

2. Third-Party Services

This paid version of the App does not include advertisements or advertising networks. Therefore, we do not use Google AdMob or other third-party advertising services that collect user data for ad targeting purposes.

However, the App does use the following third-party services:

Google AI (AI Tutor Feature)

The AI Tutor feature uses Google AI to answer your questions about the Heidelberg Catechism. When you use this feature:

• Your questions are sent to Google AI services
• Google may process and analyze your questions to provide responses
• Conversation data may be used to improve AI services
• Google's privacy policy applies to this data processing

For more information about Google AI's data practices, visit: https://ai.google.dev/privacy

Text-to-Speech Services

The App includes text-to-speech functionality to read questions and answers aloud. This feature uses:

• Device-native text-to-speech engines
• Third-party speech synthesis services (if available in your region)

Speech data is processed on your device or through secure third-party services and is not stored for advertising or commercial purposes.

3. No Advertising

As a paid app, Heidelberg Catechism does not display any advertisements. This means:

• No advertising networks collect your device identifiers
• No advertising IDs are used for ad targeting
• No ad-related tracking or analytics
• A clean, focused study experience without interruptions

4. Data Security

We prioritize your privacy and security:

• Most data is stored locally on your device
• Data transmitted to third-party services (e.g., AI Tutor) uses secure encryption
• We do not store or sell your personal information
• Since this version has no ads, your device identifiers are not tracked or shared with advertising networks
• Keep your device and app updated for security

5. Children's Privacy

The App complies with the Children's Online Privacy Protection Act (COPPA). Since this version does not include advertising services, it is particularly suitable for children while maintaining the highest privacy standards.

• We do not knowingly collect personal information from children
• The app is designed to be safe and appropriate for all ages
• No tracking or targeting based on user demographics

If you believe we have collected information from a child, please contact us immediately.

6. Permissions Used

The App uses minimal device permissions:

• Internet: Required for the AI Tutor feature and optional app updates
• Audio (Microphone): Optional, used only if you enable voice input in the AI Tutor
• Storage: To save your study progress locally

This paid version does not require advertising permissions since it contains no ads.

7. Your Rights and Choices

You have full control over your privacy with this ad-free version:

• No ad tracking settings to configure
• Disable microphone permission if not using voice input in AI Tutor
• Clear app cache and data through device settings if needed
• Uninstall the App at any time
• Contact us with any privacy-related questions or concerns

8. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or other factors. Any material changes will be posted on this page, and the updated date will be reflected at the top of this document. Your continued use of the App following the posting of revised Privacy Policy means that you accept and agree to the changes.

9. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our privacy practices, please contact us:

10. Compliance with Laws

This App complies with applicable privacy laws and regulations, including COPPA, GDPR, CCPA, and Google Play Console privacy requirements. We are committed to protecting user privacy and maintaining the highest standards of data protection. The ad-free nature of this version further enhances user privacy protection.

Comparison: Free vs. Paid Version