Privacy Policy

Last updated: August 14, 2026 · Version 1.1

1. About This Policy

Realbook ("the App") is an ebook reader developed and operated by an individual developer ("I", "me", "my"). This Privacy Policy explains what data is collected when you use the App, how it is used, and what rights you have.

I take a minimal-data approach. The App does not require an account, email address, or password. Most features work entirely offline. Imported books, reading progress, bookmarks, highlights, and settings remain on the device.

2. What Data Is Collected

2.1 Data You Provide

The App does not require or collect personal information that directly identifies you — no name, email address, phone number, or password. No account or anonymous cloud-sync identifier is created.

2.2 Automatically Collected Data

Data	Purpose	Collected By
Advertising ID (AAID)	Showing ads (AdMob)	Google AdMob
App usage analytics (screens viewed, features used)	Understanding which features are popular, improving the app	Firebase Analytics
Crash logs (stack traces, device model, OS version)	Diagnosing and fixing bugs	Firebase Crashlytics

2.3 What Is NOT Collected

Location data (GPS, Wi-Fi based, or any other)
Contacts, calendar, messages, or call logs
Camera or microphone recordings
Payment or credit card information
Biometric data (fingerprints, face data)
Health or medical data
Government-issued identifiers
Photos or media files from your device

3. Legal Basis for Processing (GDPR)

Under the EU General Data Protection Regulation, data processing is based on:

Legitimate interest (Article 6(1)(f)) — Anonymous analytics and crash reporting for app stability and improvement. Advertising ID for supporting the free version via ads.
Device and service controls — Users can manage advertising and analytics preferences through available operating-system and service-provider controls.

4. Third-Party Services

The App uses the following third-party services, each of which has its own privacy policy:

Service	Provider	Purpose	Privacy Policy
Firebase Analytics	Google LLC (USA)	Usage analytics	Firebase Privacy
Firebase Crashlytics	Google LLC (USA)	Crash reporting	Firebase Privacy
Google AdMob	Google LLC (USA)	Banner advertising	Google Privacy
ShareBible CDN	ShareBible	Optional classic-book catalog and on-device TTS model downloads	ShareBible

5. International Data Transfers

Advertising, analytics, and crash data may be transferred to and stored by Google infrastructure in the United States. Imported books and reading data are not uploaded by the App. Where required by applicable law, transfers are safeguarded by mechanisms provided by the relevant service providers.

6. Data Retention

Data	Retention Period
Analytics (Firebase)	Up to 14 months (Firebase default)
Crash logs	90 days after last occurrence
Advertising ID	Managed by Google — not stored by the App

7. Your Rights

Depending on your jurisdiction, you have the right to:

Access — Request a copy of your data
Rectification — Correct inaccurate data
Erasure — Request deletion of your data ("right to be forgotten")
Restriction — Limit how your data is processed
Portability — Receive your data in a structured format
Objection — Object to processing based on legitimate interest
Withdraw consent — Withdraw any previously given consent

To exercise any of these rights, please contact me at the email address in Section 9. I will respond within 30 days (GDPR) or the timeframe required by your local law.

8. Children's Privacy

The App is not directed at children under 14 (Korea) or 16 (EU). I do not knowingly collect personal data from children. If you are a parent and believe your child has provided data, please contact me for immediate deletion.

9. Contact & Data Protection Officer

Data Controller / Chief Privacy Officer:

SheriffAgent (Individual Developer)
Email: [email protected]
Response time: Within 30 days (GDPR) / Within 10 days (Korea PIPA)

10. Supervisory Authority

You have the right to lodge a complaint with your local data protection authority:

South Korea: Personal Information Protection Commission — pipc.go.kr
EU: Your national Data Protection Authority — find yours here
California: California Privacy Protection Agency — cppa.ca.gov
Japan: Personal Information Protection Commission — ppc.go.jp
Brazil: ANPD — gov.br/anpd

11. CCPA / CPRA Notice (California Residents)

Under the California Consumer Privacy Act, California residents have additional rights. The App does not sell personal information as defined by CCPA. AdMob may use your Advertising ID for personalized ads, which under some interpretations could be considered a "sale" or "sharing" of data. You can opt out of personalized ads via your device settings (Settings → Privacy → Ads → Opt out of Ads Personalization on Android).

12. Changes to This Policy

This policy may be updated from time to time. Material changes will be communicated through the App or the Play Store listing. Continued use after changes constitutes acceptance.