Privacy Policy

Effective Date: January 2026

1. Introduction

Ham Radio Master (FCC) ("we," "our," or "the App") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our mobile application.

2. Information We Collect

2.1 Automatically Collected Information

• Device Information: Device type, operating system version, unique device identifiers
• Usage Data: Study sessions, quiz attempts, question interactions (stored locally)
• Analytics Data: App opens, feature usage, crash reports (via Firebase Analytics)
• Ad Interaction Data: Ad impressions, clicks (via Google AdMob)

2.2 User-Provided Information

• Favorites: Questions you bookmark (stored locally on device)
• Statistics: Your quiz scores, study progress (stored locally on device)
• Purchase History: In-app purchases (processed by Google Play Store)

3. How We Use Your Information

We use collected information to:

• Provide and improve the App's functionality
• Track your study progress and quiz performance
• Display relevant advertisements (for free users)
• Analyze app usage to improve user experience
• Process in-app purchases
• Detect and prevent technical issues and fraud

4. Data Storage

4.1 Local Storage

Most data is stored locally on your device using SharedPreferences and Hive:

• Favorite questions
• Quiz statistics
• Study progress
• Theme preferences (light/dark mode)

4.2 Cloud Storage (Firebase)

Optional cloud sync (if enabled) uses Firebase Firestore:

• Anonymous user ID (no personal information)
• Study statistics (aggregated data)
• Favorite questions (synced across devices)

5. Third-Party Services

The App uses the following third-party services:

5.1 Google Firebase

• Purpose: Analytics, crash reporting, cloud sync
• Data collected: Anonymous usage data, device information
• Privacy Policy: https://firebase.google.com/support/privacy

5.2 Google AdMob

• Purpose: Display advertisements (free users only)
• Data collected: Ad impressions, clicks, device identifiers
• Privacy Policy: https://policies.google.com/privacy
• Ad Personalization: Users can opt-out via device settings

5.3 Google Play Billing

• Purpose: Process in-app purchases
• Data collected: Purchase history, payment information
• Privacy Policy: https://policies.google.com/privacy

6. Data Security

We implement security measures to protect your data:

• Local data encrypted at rest (device encryption)
• Firebase App Check enabled (prevents API abuse)
• HTTPS encryption for all network requests
• No sensitive personal information collected

7. Children's Privacy

The App is suitable for users 13 years and older. We do not knowingly collect personal information from children under 13. If you believe a child under 13 has provided us with personal information, please contact us immediately.

8. Your Rights

You have the right to:

• Access: View your locally stored data within the App
• Delete: Clear all local data via App settings or uninstall
• Opt-Out: Disable analytics in device settings
• Ad Personalization: Disable personalized ads in device settings
• Data Portability: Export your study statistics (future feature)

9. California Privacy Rights (CCPA)

California residents have additional rights under the California Consumer Privacy Act (CCPA):

• Right to know what personal information is collected
• Right to delete personal information
• Right to opt-out of sale of personal information (we do not sell data)

10. GDPR Compliance (European Users)

For users in the European Union:

• Legal basis for processing: Legitimate interest, consent
• Data retention: Until app uninstall or user deletion request
• Right to access, rectify, erase, restrict, and port data
• Right to withdraw consent at any time

11. No Sharing or Sale of Data

We do NOT:

• Sell your personal information to third parties
• Share your data with advertisers directly
• Use your data for purposes not disclosed in this policy

12. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated "Effective Date." Continued use of the App after changes constitutes acceptance of the updated policy.

13. Data Deletion

To delete your data:

1. Local Data: Go to App Settings → Clear All Data
2. Cloud Data: Email us at dev@corithmflowmatrix.com with your user ID
3. Complete Removal: Uninstall the App from your device

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Last Updated: January 2026
Ham Radio Master (FCC) - FCC Amateur Radio License Exam Prep
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