Your privacy is important to us. This Privacy Policy explains how ZWDS Calculator collects, uses, and protects your information when you use our service.

Information We Collect

We collect information you provide directly, including birth date, time, and gender for chart calculations. If you create an account, we also store your email address and saved charts. We automatically collect usage data such as browser type, device information, and interaction patterns.

How We Use Your Information

We use your information to generate personalised Zi Wei Dou Shu charts and AI interpretations, improve our service and user experience, save your charts if you have an account, and send important service updates.

Cookies and Tracking

We use essential cookies for authentication and preferences, analytics cookies to understand usage patterns, and advertising cookies through Google AdSense. You can manage cookie preferences through your browser settings.

Third-Party Services

We use Google Analytics for usage analysis, Google AdSense for advertising, OpenAI for AI-powered interpretations, and Firebase for authentication and data storage. These services have their own privacy policies.

Data Security

We implement industry-standard security measures to protect your data, including encryption in transit and at rest. However, no method of transmission over the internet is 100% secure.

Contact Us

If you have questions about this Privacy Policy, please contact us through our support channels.