The whole thing in one sentence: your birth date and time are computed in your browser and never leave your device.
01. In short
Astrograph is a free Human Design calculator that runs entirely in your browser, it is a static site hosted on Cloudflare. Sensitive data (your date, time and place of birth) is processed locally on your device and is never sent to us or to any third party. You don't create an account and you don't give us any contact details.
You can verify this yourself: open your browser's developer tools (F12), the “Network” tab, and calculate a chart, you'll see that no request carrying your birth data ever leaves your device. The calculator's code is open source (MIT licence), so anyone can check it.
02. Birth data
The date, time, time zone and optional name and place of birth you enter are used only to compute the chart in your browser. They are not sent to a server, not logged, and not stored on our side. We have no access to them and could not hand them over, delete or sell them, because we never receive them.
If you choose to save a chart, it stays in your browser's local storage (localStorage), on your device. This is not a cloud sync; clearing the site's data in your browser removes those saves.
03. Local storage
We keep the following values in your browser's local storage. They stay on your device and are not visible to us as server-side data:
| Value | Why |
|---|---|
| Your last computed chart and saved charts | So you don't have to enter your data again when you come back. |
| Language preference | Remembering your interface language. |
These are not tracking cookies or cross-site identifiers. You can remove them at any time by clearing this site's data in your browser settings.
04. Cookies and tracking
We don't use cookies for tracking, and we don't use ad networks, marketing pixels, remarketing or profiling. We don't build a user profile and we don't link data across sites. That's why there is no tracking-cookie consent banner, there is nothing to consent to.
If we measure traffic at all, we do it in a cookieless, aggregated way only (e.g. the number of visits to a page), without identifying individuals and without tracking you over time.
05. No account
The service works without registration, without sign-in and without giving an email. We keep no server-side database of users or charts. Under the GDPR, your date, time and place of birth are personal data and the generated chart is profiling, which is exactly why we build the service around privacy by design: the computation runs on the client side, and birth data never reaches our server in the first place.
06. Contact and changes
Contact for privacy matters: astro@astrograph.me. The project is open source, you can also raise questions through its repository on GitHub. We may update this policy when the service or the law changes, the date of the last update is at the top of this document.