Last updated 2 November 2026 (Cruxword in ChatGPT added). Cruxword is a daily word game. We collect as little as we can, never sell data, and show no ads.
What we collect
- Game data. A random player id and secret created in your browser, the name you choose for the leaderboard, and the grids and scores you submit. This runs the leaderboard.
- Visit statistics. Cloudflare Web Analytics counts page views, referring sites, countries and page speed without cookies and without identifying you.
- Product analytics, only if you accept. If you click Accept on the analytics banner, Mixpanel records game events (for example "puzzle viewed", "grid submitted", "share copied") tied to your random player id, plus approximate location from your IP address. For about a quarter of players who accept, Mixpanel also records a replay of how the page was used (taps, tile moves, scrolling) so we can see where the game is confusing; anything typed and all player names are masked. We send no names or emails to Mixpanel. Decline and none of this is sent.
- Ad measurement, only if you accept and only while we advertise. When we run ads for Cruxword on Google, Meta (Facebook and Instagram), TikTok or Reddit, the analytics banner names those companies. If you accept it, their measurement tags record that you arrived and whether you submitted a grid, signed up for email or started Cruxword Plus, so we can tell which ads work. These companies may set cookies and receive your IP address and browser details under their own privacy policies. We turn off ad personalisation, send them no names or emails, and Cruxword itself shows no ads. Decline and none of these tags load.
- Email, only if you sign up. Your address, when and where you agreed, and the exact wording you agreed to. We email only after you confirm.
- Purchases. Stripe processes Cruxword Plus payments. We receive your email, plan and subscription status, never your card details.
Cruxword in ChatGPT
Cruxword's app in ChatGPT shows the day's puzzle as a game inside the conversation and can check whether a word is in our dictionary. When ChatGPT uses it, our server receives the tool request: the word to check, and a coarse location hint from ChatGPT (time zone) used only to pick your local day's puzzle. We don't receive your conversation, name, email or account, we store nothing from these requests beyond Cloudflare's standard request logs, and the app has no analytics, ads or purchases. Your progress in the game is kept by ChatGPT with the conversation. Grids played in ChatGPT aren't sent to the cruxword.com leaderboard. OpenAI handles your use of ChatGPT under its own privacy policy.
Who processes it
Cloudflare (hosting, database, web analytics), Mixpanel (product analytics, with consent), Stripe (payments and tax), Resend (email delivery), and, only while we advertise and only with your consent, Google, Meta, TikTok and Reddit (ad measurement). Each handles data only to provide its service to us.
Your choices
- Change your analytics choice any time with Privacy choices in the footer.
- Unsubscribe from email with the link in every message.
- Ask us to delete your leaderboard entries, email record or analytics profile by writing to [email protected]. Include your leaderboard name or email address.
- Clearing your browser storage removes your player id from that device.
Retention
Scores stay while the leaderboard and archive exist. Email records stay until you unsubscribe, then only the unsubscribe record is kept. Purchase records are kept as tax law requires.
Children
Cruxword is for a general audience and is not directed at children under 13.