Google Play Privacy Policy
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Privacy Policy for Sổ vàng bạc

Effective date: August 7, 2026

This Privacy Policy explains how Sổ vàng bạc ("we", "us", "our") collects, uses, stores, and shares information when you use our mobile application.

1. Information We Collect

Depending on the features you use, the app may process the following data:

  • Account information from sign-in providers (Firebase Authentication): basic profile data such as user ID, display name, and email address.
  • Portfolio and app content you enter: transaction records, asset preferences, watchlist/favorites, and related settings.
  • Device-side settings: language, theme, selected package, and similar app preferences.
  • Purchase and subscription status from in-app billing providers (through RevenueCat and app stores).
  • Advertising-related data from ad networks (AdMob), which may include advertising identifiers and ad interaction signals handled by Google systems.
  • Notification permission state and locally scheduled notification metadata for alert features.

2. Data We Store Locally on Your Device

The app stores portfolio data and preferences locally on your device using local storage and secure app preferences APIs. This local data is used to provide core app functionality.

3. Cloud Sync and Authentication

If you sign in and use sync features, your app snapshot data may be uploaded to cloud storage (Firebase/Firestore) and linked to your authenticated user ID so your data can sync across devices.

4. In-App Purchases and Subscriptions

Payments are processed by Google Play and related billing partners. We do not directly collect or store your full card number. We may receive purchase status and entitlement information needed to unlock premium features.

5. Advertising

The app may display rewarded ads via Google AdMob. AdMob may process data according to Google's privacy terms and applicable law.

6. Biometric Access

If you enable biometric lock, biometric checks are performed by your device OS APIs. We do not receive or store your raw fingerprint or face template data.

7. Feedback and External Links

If you open feedback or support links, you may be sent to external services (for example, web forms or app-store pages). Those services have their own privacy policies.

8. How We Use Information

  • Provide core portfolio tracking and price features.
  • Sync your data across devices when you request sync.
  • Provide premium subscriptions and one-time purchases.
  • Show rewarded ads and support app monetization.
  • Maintain app stability, prevent abuse, and improve reliability.

9. Data Sharing

We may share data only with service providers required to operate app features, such as Firebase, Google Play Billing, RevenueCat, and AdMob. We do not sell your personal data.

10. Data Retention and Deletion

Local data remains on your device until you remove it (for example by clearing app data or uninstalling). Synced cloud data may remain until deleted or overwritten by sync behavior.

11. Children

This app is not directed to children under 13 (or the minimum age required by local law).

12. Security

We use reasonable technical and organizational safeguards, but no method of storage or transmission is 100% secure.

13. International Transfers

Third-party providers may process data on servers in different countries.

14. Changes to This Policy

We may update this Privacy Policy from time to time. Updates will be posted on this page with a new effective date.

15. Contact

For privacy questions, contact us at: quinny1410@gmail.com

The policy content is available in both English and Vietnamese. For Google Play submission, keep both versions aligned when you update this page.