Privacy

Cinna computes your Chinese astrology chart from your birth details and shows you readings. This page explains what we collect, why, and how to remove it. Plain language, no surprises.

What we collect

• Birth details — date (required), and optionally time and place. These are needed to compute your four-pillar chart.
• Email — only if you choose to give it, to send your readings.
• A session cookie (cn_chart) so we can remember your chart between visits. It’s strictly functional — no advertising or cross-site tracking cookies.

How we use it

Solely to generate and show your readings, your daily energy, and compatibility — and, if you opted in, to email them to you. We don’t sell your data, and we don’t use it for advertising.

Who processes it

To run the service we share the minimum necessary with these providers:

• Supabase — database hosting (your chart + email).
• Vercel — application hosting.
• OpenRouter — generates the worded readings. We send only the structured chart data (elements, pillars) — never your name or email.
• Open-Meteo — turns a city name into coordinates for true solar time.
• Cloudflare — serves the artwork.

Keeping and deleting your data

We keep your chart and readings so the app works on return visits. To get a copy of your data, or to have it deleted, email [email protected] and we’ll handle it.

Children

Cinna isn’t intended for anyone under 16.

Changes

If this policy changes, we’ll update the date above. Questions: [email protected].