Effective 28 July 2026
This site has no sign-up or login, and collects no name, contact details or payment information.
Your birth date, time and sex are used for calculation inside the browser only. They are not sent to a server and never appear in the URL.
Records you have read remain in this device’s browser storage (localStorage), up to five. They can be deleted with [D] Clear log on the entry screen and the cover, and they disappear if you clear browser storage.
※ This storage exists only in this device’s browser. It cannot be read from another device, and not by the operator either.
Google Analytics 4 is used to see how many people visit and where they come from. This uses cookies.
※ Active in production only; nothing is sent from development or preview deployments.
If you choose a language, that choice is remembered in a cookie so the site opens in the same language next time. Before you choose, your browser’s language setting is followed.
※ If cookies are blocked, the language follows your browser setting every time.
Vercel Speed Insights measures page load performance. What it sends is only the path and load timing, and it uses no cookies.
※ Both have servers outside Korea, so the items above are transferred abroad. The information in section 2 is never transmitted and so is not subject to transfer.
There is no other disclosure to third parties. No advertising is shown and no information is sold.
※ Any change is posted on this page with its effective date. Earlier versions are not removed.