Privacy Policy

Last updated: August 6, 2026

1. Who we are

Master Kai (“we,” “us,” “our”) operates the website masterkai.com and related services. We provide BaZi (Four Pillars of Destiny) chart calculations, Feng Shui analysis, and classical Chinese metaphysics tools. Our registered consulting entity is Nova Masters Consulting.

2. Information we collect

2.1 Account information

When you register for an account, we collect:

• Your name (as provided)
• Email address
• Password (encrypted — we cannot see it)
• Preferred language

2.2 Birth data

To generate accurate BaZi charts, we collect:

• Birth date (year, month, day)
• Birth time (hour and minute, if known)
• Gender
• Time zone or geographic location (for true solar time calculation)

This data is considered personally identifiable information (PII) and is stored securely in our database.

2.3 Payment information

When you purchase subscriptions, consultations, or digital products, payment is processed by Stripe. We do not store your credit card number, CVV, or full card details on our servers. We receive:

• Transaction confirmation from Stripe
• Subscription status and billing dates
• Last four digits of your card (for your reference only)

2.4 Usage data

We collect anonymized data about how you use our tools:

• Charts generated (without birth details — only timestamps)
• Pages visited and features used
• Device type and browser (for compatibility)
• IP address (for security and fraud prevention)

2.5 Communications

If you contact us via email or our contact form, we retain those communications to respond to your inquiry and improve our service.

3. How we use your information

We use your data for the following purposes:

• To provide our service: Calculating your BaZi chart, generating analyses, and saving your charts to your account
• To manage your account: Authentication, password resets, and account preferences
• To process payments: Subscription billing, consultation fees, and digital product purchases
• To communicate with you: Service updates, chart notifications, and support responses
• To improve our tools: Understanding which features are used most, fixing bugs, and developing new calculators
• To comply with legal obligations: Tax reporting, fraud prevention, and responding to lawful requests

4. How we protect your data

We implement industry-standard security measures:

• Encryption: All data is transmitted via HTTPS (TLS 1.3). Passwords are hashed using bcrypt.
• Secure hosting: Our servers are hosted with reputable providers using firewalls and intrusion detection.
• Access control: Only authorized personnel can access user data, and only for support or maintenance purposes.
• Regular backups: Encrypted backups are stored separately from production systems.
• No third-party analytics: We do not use Google Analytics, Facebook Pixel, or similar tracking tools that share data with advertising networks.

5. Who we share data with

We do not sell, rent, or trade your personal information. We share data only with:

• Stripe: For payment processing. Stripe’s Privacy Policy
• Email service provider: For sending transactional emails (account verification, password resets, chart notifications). We use services that do not use your data for advertising.
• Hosting provider: For server infrastructure. They have access to encrypted data only for technical maintenance.
• Legal authorities: Only when required by law, court order, or to protect our rights and safety.

6. Cookies and tracking

We use minimal cookies:

• Essential cookies: To keep you logged in and remember your preferences
• Session cookies: Temporary cookies that expire when you close your browser

We do not use tracking cookies for advertising or behavioral profiling.

7. Data retention

• Account data: Retained as long as your account is active. If you delete your account, we remove your personal data within 30 days, except where retention is required by law.
• Birth data: Retained with your account. You can delete individual charts at any time.
• Payment records: Retained for 7 years for tax and accounting purposes (as required by law).
• Communications: Retained for 2 years for support reference.

8. Your rights

Depending on your location, you may have the following rights:

• Access: Request a copy of the personal data we hold about you
• Correction: Update or correct inaccurate information
• Deletion: Request deletion of your account and personal data
• Portability: Export your data in a machine-readable format
• Restriction: Limit how we use your data in certain circumstances
• Objection: Object to certain types of processing (e.g., marketing emails)

To exercise any of these rights, contact us at privacy@masterkai.com. We will respond within 30 days.

9. International data transfers

Our servers are located in the United States. If you access our service from outside the US, your data will be transferred to and processed in the US. By using our service, you consent to this transfer. We ensure appropriate safeguards are in place to protect your data.

10. Children’s privacy

Our service is not intended for children under 16. We do not knowingly collect personal information from children under 16. If you believe a child has provided us with personal data, please contact us immediately and we will delete it.

11. Changes to this policy

We may update this Privacy Policy from time to time. Material changes will be notified via email and a notice on our website. The “Last updated” date at the top of this page indicates when the policy was last revised.

12. Contact us