Last Updated: April 26, 2026
This Privacy Policy describes how we ("we," "us," or "our") collect, use, and share information about you when you use our mobile application PDF Reader (the "App").
1. Information We Collect
Files and Media: As a PDF utility tool, PDF Reader requires access to your device's storage to read, view, and manage PDF documents. We only access the specific files you choose to interact with within the App.
Device Information: We may collect basic technical information such as device model, OS version, and unique device identifiers to optimize app performance and fix crashes.
Usage Data: We may collect anonymized data on feature usage (e.g., how often the search function is used) to improve the user experience.
2. How We Use Information
We use the collected information to:
Provide and maintain the App's core functionality.
Improve, personalize, and expand our App services.
Deliver relevant advertisements through third-party partners.
3. Advertising and Third-Party Services
The App uses third-party services that may collect information used to identify you. This includes:
Google AdMob: We use AdMob to serve advertisements. AdMob may use device identifiers (like Android Advertising ID) to show personalized ads. You can learn more about how Google uses data by visiting: How Google uses information from sites or apps that use our services.
Google Play Services: Privacy Policy
Firebase Crashlytics: (for bug reporting and stability monitoring)
4. Data Security
We value your trust in providing us access to your documents. PDF Reader does not upload your personal files to any external servers. We use commercially acceptable means of protecting your technical data, but please remember that no method of electronic storage is 100% secure.
5. Children’s Privacy
These Services do not address anyone under the age of 13. We do not knowingly collect personally identifiable information from children under 13.
6. Changes to This Privacy Policy
We may update our Privacy Policy from time to time. You are advised to review this page periodically for any changes.
7. Contact Us
If you have any questions or suggestions about our Privacy Policy, please contact us at: liuronghua0727@gmail.com