Cookie Policy
Last updated: 24 March 2026
Cookie Policy
Growing Bright Minds Last updated: March 2026
1. What Are Cookies
Cookies are small text files stored on your device when you visit a website. They help the site function, remember your preferences, and — with your consent — collect analytics data.
2. How We Use Cookies
We use cookies in two ways:
- Essential cookies — always active; required for the site to function
- Analytics cookies — only set if you accept them via our cookie banner
We do not currently use marketing or advertising cookies.
3. Cookie Inventory
Essential Cookies (always on — no consent required)
| Cookie name | Purpose | Duration | Set by |
|---|---|---|---|
gbm_consent | Stores your cookie preferences (accepted/declined categories) | 365 days | Growing Bright Minds |
auth_redirect | Remembers where to redirect you after sign-in | Session | Growing Bright Minds |
sb-*-auth-token (2 cookies) | Manages your authenticated session when signed in via Google | Session / Lax | Supabase (our database provider) |
These cookies are strictly necessary. The site cannot function correctly without them.
Analytics Cookies (only set with your consent)
| Cookie name | Purpose | Duration | Set by |
|---|---|---|---|
ph_phc_* (PostHog device cookie) | Identifies your device for product analytics (page views, scroll depth, interactions) | 1 year | PostHog (EU Cloud, Frankfurt) |
ph_sTMFPs* (PostHog session) | Tracks session activity for analytics | 1 year | PostHog |
ph_current_instance | PostHog configuration (EU instance endpoint) | 1 year | PostHog |
ph_current_project_name | PostHog project identifier | 1 year | PostHog |
ph_current_project_token | PostHog project token | 1 year | PostHog |
ph_last_login_method | PostHog login method tracking | 1 year | PostHog |
_ga, _ga_* | Google Analytics 4 — measures traffic and acquisition | 2 years |
If you decline analytics cookies, none of these are set. PostHog operates in cookieless mode for declined-consent users. Google Analytics 4 uses Consent Mode v2, which collects only modelled (anonymised) data when consent is declined.
4. Your Consent Choices
When you first visit the site, a banner appears with three options:
- Accept All — enables analytics cookies
- Reject All — only essential cookies are used
- Customise — choose which categories to enable
Your preference is stored in the gbm_consent cookie for 365 days. You can change your preference at any time via the Cookie preferences link in the site footer.
5. Third-Party Cookie Providers
| Provider | Purpose | Privacy policy |
|---|---|---|
| PostHog (EU Cloud) | Product analytics | posthog.com/privacy |
| Google Analytics | Acquisition analytics | policies.google.com/privacy |
| Supabase | Authentication session | supabase.com/privacy |
6. Managing Cookies in Your Browser
You can also control cookies through your browser settings. Note that blocking essential cookies may affect site functionality.
7. Changes to This Policy
We may update this policy as new cookies are introduced or existing ones change. The "last updated" date reflects the most recent revision. Material changes will be communicated via the site banner.
Cookies this site sets itself
This list is generated from the code that sets them, so it is always what your browser is actually given. Cookies from other companies, and the ones that only appear once you accept analytics, are described in the section above.
| Name | What it is for | How long it stays |
|---|---|---|
gbm_daynot readable by page scripts | Remembers which story, video and printable pages you have opened today, so the free daily allowance works. It holds no name, no account and no identifier. | Until midnight UTC, then it is gone — at most 24 hours |
gbm_consent | Remembers your cookie choices, so you are not asked again on every visit. | 1 year |
auth_redirect | Remembers the page you were reading, so signing in brings you back to it. | 10 minutes |
gbm_news_offer | Remembers whether you ticked the newsletter box, so that choice survives the trip to Google and back. It is read once and deleted. | 10 minutes |