Privacy and measurement

We measure which Facebook/Instagram or Google ads bring visitors, how far they get through our challenges and whether they create a new account.

PostHog receives a random browser ID, ad tags, page/step events, signup, reward claims and a completed-lesson signal after signup. This funnel tracking sends no answers, marks, chats, recordings, phone/email or session replays.

Meta receives public challenge page visits and actual new signups, browser/ad IDs and hashed signup phone/email details. Hashing is not anonymisation: Meta can use it to match an account. Lesson activity is not sent to Meta.

Google Ads receives public challenge page visits, challenge completions, actual new signups and Google's own click ID, so we know which search ad worked. Visits to these public pages are also used to build Google advertising audiences, so you may later see our ads elsewhere. This happens only on the public challenge pages, never inside a lesson or your dashboard, and phone/email details are not sent to Google. You can turn this off at any time on this page, and Google switches personalised advertising off for signed-in under-18s in any case.

Browser attribution and local event records are kept for 30 days. You can turn measurement off for this browser below. We also honour browser Global Privacy Control and Do Not Track signals. This does not affect challenges, signup or rewards.

Turning it off stops new events, pending delivery and the local signup-to-lesson linkage. It does not automatically delete data already delivered; see our main privacy policy for deletion requests. Main privacy policy