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Cookies & Browser Storage

Last updated: September 2026 · Effective: September 2026

This is the complete list of what BirthHue stores in your browser. Everything here is strictly necessary to run the service. We set no analytics, advertising or tracking cookies, and nothing below is shared with advertisers. It supplements our Privacy Policy.

1.Cookies on app.birthhue.com

Name	Set by	Purpose	Lasts	Set when
`sb-<project>-auth-token`	BirthHue (via Supabase sign-in library)	Keeps you signed in. Holds your session. May be split into numbered pieces (.0, .1) when large.	Up to 400 days, or until you sign out	You sign in
`active_chart_id`	BirthHue	Remembers which of your charts you last selected.	1 year	You choose a chart
`sidebar_state`	BirthHue	Remembers whether the sidebar is open or collapsed.	7 days	You toggle the sidebar

The sign-in cookie is sent only to BirthHue, is marked Secure (HTTPS only), and is never read by other sites.

2.Cookies on birthhue.com (the website)

None. The marketing website sets no cookies. Cloudflare Web Analytics, which we use for page-view counts, is cookie-free.

3.Browser storage (not cookies)

Key	Where	Purpose	Lasts
`cookie-notice-dismissed`	Local storage, website and app	Remembers that you dismissed the cookie notice.	Until you clear it
`birthhue:invite-code`	Local storage, app	Holds an invite code from a friend's link until you finish signing up, then it is removed.	Until used or cleared

4.Other companies involved

Google: if you choose “Continue with Google”, you are sent to Google’s sign-in page, which sets its own cookies under Google’s policies. We do not control or see them.
Sentry: our error reports are sent to Sentry when something breaks. Sentry’s browser library does not set cookies for this.
Cloudflare: serves our pages. We have not observed Cloudflare setting any cookie on our sites; if Cloudflare ever sets a short-lived security cookie to block abuse, it is strictly for security. On the friend-invite page only, Cloudflare Turnstile (a bot check) runs inside a Cloudflare-hosted frame; anything it stores belongs to Cloudflare, not BirthHue.

5.Your choices

Because everything above is strictly necessary, there is nothing to opt out of; blocking the sign-in cookie simply means you cannot stay signed in. You can delete any of it at any time in your browser settings. Signing out removes the sign-in cookie. If this list ever changes, we will update this page first and ask for your consent where the law requires it.

6.Contact Us

Questions: support@birthhue.com.