Privacy Policy

Last updated: December 26, 2025

At Baizhanhui ("we", "us", or "our"), we are committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our application.

This website and the services provided are operated by Abel (Bai Zhanhui).

1. Information We Collect

1.1 Information You Provide

When you purchase Brightness through our payment processor (Paddle), they may collect:

  • Email address
  • Payment information (processed securely by Paddle)
  • Name and billing address

1.2 Information Collected Automatically

The Brightness application operates entirely on your local Mac and does not collect, transmit, or store any personal data on external servers. Specifically:

  • We do NOT collect display brightness data
  • We do NOT collect system configuration information
  • We do NOT collect usage statistics
  • We do NOT use any analytics services
  • We do NOT track your behavior

1.3 Local Data Storage

Brightness stores your preferences (such as brightness range settings and dark mode automation preferences) locally on your Mac using the standard macOS preferences system. This data never leaves your device.

2. How We Use Your Information

The only information we process is:

  • Purchase Information: Processed by Paddle to complete your transaction and provide you with a license
  • Support Communications: If you contact us for support, we use your information to respond to your inquiries

3. Third-Party Services

3.1 Paddle

We use Paddle as our Merchant of Record for payment processing. Paddle handles all payment-related data. Please refer to Paddle's Privacy Policy for information on how they handle your data.

3.2 No Other Third Parties

The Brightness application does not integrate with any other third-party services, analytics platforms, or data processors.

4. Data Security

Since Brightness operates entirely locally on your Mac, there is no data transmitted to our servers. Your settings and preferences are protected by your Mac's built-in security features.

5. Data Retention

We do not retain any personal data beyond what is necessary for Paddle to process your purchase. Your local application preferences are stored on your Mac until you choose to delete the application.

6. Your Rights

Depending on your location, you may have certain rights regarding your personal information, including:

  • The right to access your personal data
  • The right to rectification of inaccurate data
  • The right to erasure ("right to be forgotten")
  • The right to data portability
  • The right to object to processing

For any data-related requests, please contact us at the email address below.

7. Children's Privacy

Brightness is not directed at children under 13 years of age. We do not knowingly collect personal information from children under 13.

8. International Data Transfers

Since Brightness operates entirely locally, no data is transferred internationally. Purchase data processed by Paddle may be subject to their data transfer policies.

9. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by updating the "Last updated" date at the top of this page. We encourage you to review this Privacy Policy periodically.

10. Contact Us

If you have any questions about this Privacy Policy or our privacy practices, please contact us at:

Email: baizhanhui@outlook.com