Privacy

Last updated: 2026-08-10

This page explains what trelun collects when you use the service, how long it is kept, and how to remove it.

What we collect

• Birth date, optional birth time, birth city — used only to generate your result.
• Sex used for cycle calculation — used only to set the direction the model runs cycles; never shown on public shares.
• Anonymous guest cookie — a random identifier so we can attribute shares and referrals without accounts.
• Share snapshots — only the one card you pick: your life type, your temperament, and short copy. Your temperament is derived from your birth date and narrows it to roughly one day in ten; your actual birth date, time, and city are never published.
• If you choose to sign in — your email address and a session cookie. Signing in is optional and unlocks nothing: it only stops your saved charts from expiring. We never set a password, and sign-in codes are stored only as a hash and deleted once used.

What we do not do

• We do not sell your personal data.
• We do not put birth date, birth time, city, coordinates, or sex on public share pages or share images.
• We do not require an account for anything. Every result, chart, and share card works signed out.
• We do not use your email for marketing. It is used to send sign-in codes and nothing else.

How long we keep data

Raw birth details are stored with a short TTL (about 30 days) and then deleted. Public share links keep only a privacy-safe snapshot so links can keep working after birth details are removed.

How to delete

Clear this site’s cookies and site data in your browser to remove the guest identifier from your device. If you created a share link on this device, open your result page and useRevoke share link (uses the owner token stored only in your browser). Raw birth details are deleted automatically after about 30 days by a scheduled purge.

If you have an account, go to Account → Delete account. That removes your email, your saved charts, and the stored birth details behind them, and revokes any share links created from those charts. It is immediate and cannot be undone.

Children

trelun is for people 18 and older. We do not knowingly collect data from minors.

Contact

Privacy questions, data requests, or anything else:hello@trelun.com.