Privacy & analytics.

• Page views and reading time: the page, referrer and campaign tags, device type, browser, screen size, approximate country/city (from the request, the IP address itself is not stored), time actively reading and how far you scrolled.
• Learning events: lessons opened and completed, sections read, quiz and trial answers, searches (length only, never the text), shares, "Ask AI" clicks, games played.
• Offline reading: what you save for offline reading (which article or world, and its size), opening saved copies and installing the app. Events from while you're offline, like stages cleared, wait on your device and are sent when you're back online.
• If you sign in: your email, name and avatar from the sign-in provider, plus your progress, streaks, notes, bookmarks and comments, so they follow you across devices.
• Profile photo: if you upload one, it's cropped to a small square on your device (location and camera details are removed), stored, and shown publicly next to your comments and on your profile. Remove it any time from the avatar picker; the file is deleted.

• First-party analytics (always): sent to this site's own API and stored in its database (Supabase).
• PostHog (active): product analytics, heatmaps and session replay. Requests go through this site's own domain. Signed-in visitors are linked to their account ID and email so I can follow a learner's journey and help when something breaks.
• Google Analytics 4 (active): aggregate traffic reports. Advertising features, ad personalisation and ad storage are switched off (Consent Mode: ad_storage denied).
• Vercel Web Analytics: cookie-free page counts from the hosting provider.

A replay is a reconstruction of the page (not a video of your screen): clicks, scrolling and page changes. Everything you type is masked: email and code fields, notes, comment drafts and every other input appear as asterisks. Pages under /admin are never recorded. Recordings are kept for about a month, then deleted by PostHog.

• Use the switch at the top of this page (or "opt out" in the footer). It stops all three analytics tools in this browser.
• Turn on Global Privacy Control in your browser (built into Brave and Firefox, or an extension elsewhere): the site then sends nothing to PostHog or Google. The older Do Not Track setting doesn't switch analytics off; use the switch above.
• Reset your learning progress any time from your progress page.
• To delete your account and its data, or to ask what is stored about you, email kukreja.him@gmail.com.