Privacy Policy

Bazi: Four Pillars · Effective June 2026

This policy explains what data the Bazi: Four Pillars app ("the app", "we") collects, why, how long we keep it, and how you can have it deleted.

What we collect

• Birth date and birth time — the core inputs for every BaZi calculation. Birth time is optional; you can use the app without it.
• Birthplace / approximate location — only if you enter it, used for location-based readings and time-zone accuracy.
• Name and gender — as you enter them, used to personalize readings.
• Account identifier — a Firebase Authentication user ID created when you sign up.
• Last-active timestamp — the time of your most recent use, for service health and reliability.
• Push notification token — only if you opt in to daily readings.
• Photos — palm and face photos you choose to capture are sent to our analysis service to generate a reading and are not stored after the reading is produced.
• Purchase records — in-app purchase receipts and a credit balance, for billing integrity.

How we use it

Your data is used solely to generate your readings, personalize daily/yearly/monthly forecasts, deliver notifications you opt into, process purchases, and keep the service running. We do not sell your personal data or use it for third-party advertising.

Where it is stored

Readings and inputs are stored on your device. Your account record (account ID, birth date, birth time, locale, last-active time, push token, and credit balance) is stored on our backend (Cloudflare) so your readings can survive reinstalling the app or switching phones.

How long we keep it

Account data is retained until you delete your account. Photos are processed transiently and not retained. Some reading history may expire automatically (e.g. 48 hours) unless saved.

Deleting your account and data

You can permanently delete your account and all associated server-side data at any time from within the app: Settings → Delete Account. This removes your account record, birth data, last-active timestamp, push token, reading history and credit records, and signs you out. This action is irreversible. You may also email us to request deletion.

Children

The app is not directed at children under 13, and we do not knowingly collect their data.

Your rights

Depending on your region (e.g. EEA/UK under GDPR, China under PIPL), you may have rights to access, correct, export, or delete your personal data. To exercise these, contact us below.

Contact

Questions or requests: help@bazi-8.com