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, and cloud sync is optional and anonymous.
The App does not collect any personal information that directly identifies you — no name, email address, phone number, or password. Cloud sync uses an anonymous identifier (random UUID) generated automatically — no sign-up form is ever presented.
| 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 |
| Sync data (book titles, reading progress, highlights, bookmarks) | Optional cloud sync across devices | Supabase |
Under the EU General Data Protection Regulation, data processing is based on:
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 |
| Supabase | Supabase Inc. (USA) | Cloud data sync | Supabase Privacy |
Your data may be transferred to and stored on servers in the United States (Google and Supabase infrastructure). Where required by applicable law (including GDPR), these transfers are safeguarded by Standard Contractual Clauses or equivalent mechanisms provided by the service providers.
| Data | Retention Period |
|---|---|
| Analytics (Firebase) | Up to 14 months (Firebase default) |
| Crash logs | 90 days after last occurrence |
| Sync data (books, highlights, bookmarks) | Until deletion is requested, or 12 months after last sync activity |
| Advertising ID | Managed by Google — not stored by the App |
Depending on your jurisdiction, you have the right to:
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.
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.
Data Controller / Chief Privacy Officer:
SheriffAgent (Individual Developer)
Email: privacy@sharebible.org
Response time: Within 30 days (GDPR) / Within 10 days (Korea PIPA)
You have the right to lodge a complaint with your local data protection authority:
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).
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.