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Cookie Policy

Last updated: 4 June 2026 Β· Privacy policy Β· Terms of service

Quick view.Strictly necessary cookies (auth, payment, your active child) load automatically - they're essential. Analytics are off until you opt in. We don't currently use any advertising/marketing cookies.

What are cookies?

Cookies are small text files a website stores in your browser. Some are essential (without them you can't stay signed in or check out). Others are optional - measuring how the site is used, or showing you relevant ads on other sites.

The cookies we use

1. Strictly necessary (always on, exempt from consent)

CookiePurposeLifespan
sb-*-auth-tokenSupabase auth - keeps you signed in1 hour (refreshed)
whichone_active_childRemembers which child you're working with so the experience tiers correctly1 year
__stripe_mid / __stripe_sidStripe fraud prevention during checkoutSession / 1 year
whichone:settings:v1LocalStorage (not technically a cookie) - your tutor-level preferencesUntil cleared

2. Analytics (consent required, opt-in)

CookiePurposeLifespan
_vercel_analyticsAnonymous page-view counts via Vercel Analytics - no personal IDs1 year
ph_*PostHog product analytics (only loaded if you opt in) - pseudonymous events linked to a tutor user id when signed in. Sent same-origin via /ingest to EU-hosted PostHog; autocapture and session replay are off at the project level1 year

3. Marketing (consent required, opt-in)

We don't currently set marketing or advertising cookies. If we add a Meta or Google Ads pixel in future, the consent banner will request opt-in before any third-party script loads.

How to change your choices

  • Click the "Cookie settings" button at the top of this page (or in the site footer).
  • Choose "Strictly necessary only" or "Accept analytics".
  • Your choice is stored in a cookie called whichone:cookie-consent:v1 and respected on every page.
  • Browsers also let you delete or block cookies - see your browser's help pages.

Children

Strictly necessary cookies still apply when an adult is signed in to use the service with a child. We don't set advertising or behavioural-tracking cookies on accounts at any time, regardless of consent state.