Privacy Policy

Last updated: 12 June 2026

The short version

CodeTrained collects very little. Your typing progress lives in your own browser. There are no advertising trackers, no ad pixels, and your data is never sold.

What's stored in your browser (stays with you)

Your exercise progress, story choices, streaks, settings, and a random device ID are saved in your browser's local storage. They never leave your device unless you create an account and turn on sync. Clearing your browser data deletes them.

What the site collects

Anonymous usage events. Things like "an exercise was finished" or "chapter 1 was played", with a random device ID and, if you arrived from a link or ad, the source (for example "reddit"). No names, no emails, no precise location. These go to the site's own backend (Cloudflare) and are used to see which features and links work.
Leaderboard entries. If you submit a score, the nickname and score you chose are public by design.
Feedback. If you send feedback, the text you write is stored so it can be read and acted on.

If you buy Pro

Stripe processes the payment. CodeTrained never sees or stores your card number. Stripe shares with the site only what's needed to activate Pro (such as your email and subscription status). See Stripe's own privacy policy.
Supabase stores your account (email, password in hashed form, Pro status) so Pro works across your devices. Optional progress sync stores your progress there too.

Third parties used

Cloudflare (hosting and the events backend), Stripe (payments), Supabase (accounts), and Google Translate — which loads only if you tap the 🌐 translate button, and is then subject to Google's privacy policy. That's the full list.

Cookies

The site itself sets no tracking cookies. It uses local storage (described above) to make the site work. Stripe may set cookies on its own checkout pages.

Your rights (GDPR)

You can ask to see or delete the data linked to your account or device ID at any time, and you can delete your local data yourself by clearing browser storage. Cancelling Pro doesn't delete your account; ask if you want it removed fully. To exercise any of these rights, use the feedback button inside the app.

Changes

If this policy changes in a meaningful way, the "last updated" date above will change.