Privacy Policy – Diamond Tester & Identifier

Last Updated: 30 March 2026

1. Introduction

This Privacy Policy explains how Diamond Tester & Identifier (“we”, “our”, or “us”) collects, uses, and protects your information when you use our mobile application and services.

By using Diamond Tester & Identifier, you agree to the terms described in this policy.

2. Information We Collect

We may collect the following information:

a. Information You Provide

• Photos or camera data used for material analysis and detection features.

• Any information you provide when contacting us for support (such as your email address).

b. Automatically Collected Information

• Device type, operating system, and app version.

• App usage statistics and interaction data.

• Sensor data (e.g., magnetometer readings) used for detection features.

• Approximate location only if you grant permission in your device settings.

3. How We Use Your Information

We use your information to:

• Provide detection and analysis results.

• Analyze and display measurement values from your device sensors.

• Improve our algorithms and overall app performance.

• Respond to your support requests.

• Maintain security and prevent misuse of the app.

4. Data Storage and Security

Your data is stored securely using industry-standard practices.
We implement appropriate safeguards, including encryption where applicable, to protect your information.

We do not sell your personal data to third parties.

5. Third-Party Services

Diamond Tester & Identifier may use trusted third-party services (such as cloud hosting and analytics providers) to operate and improve the app.

These providers are required to protect your data and use it only for specified purposes.

6. Data Retention

• Sensor data and analysis results may be stored temporarily to improve app performance.

• Photos or input data may be retained only as long as necessary to support feature functionality and improve accuracy, unless you request deletion.

• We retain personal data only as long as necessary to provide services or comply with legal obligations.

7. Your Rights

Depending on your location, you may have the right to:

• Access, update, or delete your personal data.

• Request restriction or objection to data processing.

• Request a copy of your data (data portability).

To make a request, contact us at:
📧 Email: nguyenvanchien1102@gmail.com

8. Children’s Privacy

Diamond Tester & Identifier is not intended for children under 13 years old.
We do not knowingly collect personal data from children.

9. Changes to This Policy

We may update this Privacy Policy from time to time.
Any changes will be posted within the app or on our official website.

10. Contact Us

If you have any questions about this Privacy Policy, please contact us at:
📧 Email: nguyenvanchien1102@gmail.com