Privacy Policy
Summary
The Taiji Project is an interactive guide to Ba-Zi and the I Ching with an AI companion, Kaiava. We collect only what we need, never sell your data, and let you control optional conversation history.
Information we collect
- Account data — email and password hash when you create an account; Stripe customer ID for paid plans.
- Chart and reading data — birth date, time, and location you enter for Ba-Zi calculations; questions you ask about your chart.
- Learner memory — short summaries Kaiava remembers across sessions (logged-in users) to personalize readings.
- Conversation history (opt-in) — chat messages stored only if you enable “Save conversation history.” Off by default.
- Voice — speech may be transcribed for voice input; we do not permanently store raw audio.
- Usage limits — daily counts per account or anonymous IP for free-tier enforcement.
- Newsletter — email if you subscribe to updates.
- Analytics — first-party, cookieless page beacons (path only).
How we use information
- Calculate charts, cast readings, and power Kaiava conversations
- Process subscriptions via Stripe
- Send password-reset and account emails
- Protect against abuse
Third parties
Stripe (payments), Resend (email), and AI models via our Hermes proxy to OpenRouter. Providers receive only data required for their role.
Cookies
One httpOnly session cookie when signed in. No ad or third-party tracking cookies.
Retention and deletion
Delete saved conversations in Account settings or email support@taijiproject.com for full account deletion. We respond within 30 days.
Philosophical content
Ba-Zi and I Ching readings are presented as cultural and philosophical tools, not scientific or medical advice. Do not rely on them for health, legal, or financial decisions.