Privacy Policy

Last updated: 2025/12/9

We respect your privacy and are committed to protecting your personal data. This privacy policy explains how we collect, use, and share information when you use Decibel Analyzer: db noise meter (the "App"), including data processed through Firebase SDKs and data used for tracking purposes.

1. Information We Collect

We collect the following types of information through the App:

1.1 Information You Provide

• Voluntary inputs (e.g., user settings, feedback) when you interact with the App.

1.2 Automatically Collected Information

When you use the App, we and our third-party service providers (including Firebase) may automatically collect:

• Device information: Model, operating system, unique device identifiers (e.g., IDFV, IDFA when tracking is permitted), network information, and hardware settings.
• Usage data: Interactions with the App (e.g., features used, actions taken, session duration).
• Technical data: Crash reports, performance metrics, and log data (e.g., errors, connection status).

2. How We Use Your Information

We use the collected information to:

• Provide, maintain, and improve the App's functionality.
• Analyze usage patterns to enhance user experience (via Firebase Analytics).
• Diagnose and fix technical issues (via Firebase Crashlytics).
• Ensure compliance with our terms of service and applicable laws.
• Track user activity across apps and websites owned by third parties for the purpose of providing personalized content and advertising (where permitted by user consent).

3. Firebase SDK Integration

Our App integrates Firebase SDKs (provided by Google LLC) to support core functionalities. Firebase may collect and process data as described in Firebase's Privacy Policy.

Key Firebase services used:

• Firebase Analytics: Collects usage data to help us understand how users interact with the App, enabling us to improve features and user experience.
• Firebase Crashlytics: Collects crash reports and error data to help us identify and fix technical issues promptly.

Data processed by Firebase may be subject to Google's data processing practices, including transfer to Google's servers in the United States or other jurisdictions.

4. Information Sharing

We do not sell your personal data. We may share information with:

• Third-party service providers (e.g., Firebase/Google, advertising partners) who assist us in operating the App or providing personalized content/advertising, under strict confidentiality obligations.
• Legal authorities if required by law, or to protect our rights, safety, or property.

When you permit tracking, we may share your device identifiers (such as IDFA) with third parties for the purpose of tracking your activity across other apps and websites.

5. Data Retention

We retain your information only for as long as necessary to fulfill the purposes outlined in this policy, or as required by law. This includes data used for tracking purposes, which will be retained only as long as needed to provide personalized content and advertising. Firebase retains data in accordance with its own retention policies, available in Firebase's Privacy Policy.

6. Your Rights

Depending on your jurisdiction, you may have rights to:

• Access, correct, or delete your personal data.
• Object to or restrict certain data processing, including tracking activities.
• Withdraw consent (where processing is based on consent), including disabling tracking through your device settings (e.g., in iOS Settings > Privacy & Security > Tracking).

To exercise these rights, contact us at chenhongjiefennienie@gmail.com.

7. Security

We implement reasonable security measures to protect your information from unauthorized access, alteration, or disclosure. However, no data transmission over the internet is completely secure, and we cannot guarantee absolute security.

8. Changes to This Policy

We may update this privacy policy periodically. We will notify you of material changes by posting the updated policy in the App and updating the "last updated" date. Your continued use of the App after changes constitutes acceptance of the new policy.

9. Contact Us

For questions about this privacy policy, contact us at:chenhongjiefennienie@gmail.com