Cookie Settings

This website does not use cookies. For more information, see the Privacy Policy.

What this site stores

This website may use browser localStorage to remember your theme preference and your learning progress (chapters visited, badges unlocked, quiz results). This data stays entirely in your browser, is never sent to any server, and cannot be accessed by any other website.

Two narrow exceptions reach the server, both anonymous: a small activity heartbeat once you have unlocked your first badge (see below), and the optional leaderboard if you choose to publish a nickname and your score. See Privacy Policy §6 and §7 for the full breakdown.

Analytics

This website uses Cloudflare Web Analytics, a privacy-friendly, cookie-free analytics tool. It collects only aggregated usage data (page views, referrer, browser, country) and does not track individual visitors or use cookies. More details in the Privacy Policy.

Anonymous activity heartbeat

Once you have unlocked at least one badge, your browser sends a small anonymous ping to the server at most once every twelve hours. This lets the leaderboard page show how many learners are progressing through the journey without having joined yet. The only data sent is a random browser-local UUID and a timestamp. See Privacy Policy §6 for details.