Privacy Policy
Last updated June 15, 2026
Coeluna is a free, account-free astrology site, built to be private by default. The birth details you enter are used to calculate your chart entirely in your browser and are never transmitted to us. This policy explains what that means in practice, and the limited cases where third parties may set cookies.
Your birth data stays on your device
When you create a chart, horoscope or compatibility reading, the birth date, time and location you enter are processed locally on your device. The astronomical calculations run in your browser — there is no account, no server-side profile, and your birth data is never sent to or stored by Coeluna.
Your recent inputs and results are saved in your browser's localStorage so you can return to them later. They stay on your device and you can clear them at any time through your browser settings. Share links encode the birth details you entered — the input, not the computed chart — so the same link always reproduces the same reading. Anyone you send a link to can see the details it contains.
Cookies and local storage
Coeluna itself does not use cookies to track you. We use your browser's local storage only to remember your recent charts and preferences on your own device. The advertising described below may, however, set its own cookies.
Advertising
We show ads through Google AdSense, which helps keep Coeluna free. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to Coeluna and/or other sites on the internet.
You can opt out of personalized advertising by visiting Google Ads Settings, or opt out of a third-party vendor's use of cookies at aboutads.info. For more on how Google uses data from sites that use its services, see Google's partner-sites policy.
Third-party data
City and timezone lookups use place data from GeoNames, bundled with the site. Looking up a city happens in your browser and does not send your birth details anywhere.
Children
Coeluna is intended for a general audience and is not directed at children under 13. We do not knowingly collect personal information from children.
Changes to this policy
We may update this policy as the site evolves. When we do, we'll revise the date shown at the top of this page.
Contact
Questions about this policy? Email us at contact@coeluna.com.