legal
Privacy
No cookies, no ad networks, no account. Here is exactly what each part of this site can see — including the two parts that do collect something.
Last updated:
The short version
This site sets no cookies, runs no advertising, and has no login. Two features do handle data — the Turing Test and isChinaUser — and both are described in full below rather than buried.
What is measured across the site
Cloudflare Web Analytics. Cookieless and fingerprint-free: aggregate page views, referrers, country and device class, with no ability to follow you to another website. Nothing it collects identifies you individually. Because it sets no cookie, this site needs no consent banner — and deliberately does not show one.
Cloudflare edge logs. The hosting layer records request metadata, including IP address, for a short retention window, for security and abuse handling. Every web server on the internet does this. It is not used for analytics.
isChinaUser
This tool shows you what your own browser and network leak. The nine browser-side signals are computed entirely in your browser and are never transmitted.
One signal is server-side — your IP's country, ASN, timezone and network operator — because only the server can see it. That request writes nothing: the endpoint reads Cloudflare's view of your connection and hands it straight back to you with no-store. It is not logged, not stored and not aggregated. The whole point of the tool is to show you what others see, which would be self-defeating if it kept a copy.
The Turing Test
You are paired anonymously with another participant and you type at each other. There is no sign-up, no name and no persistent identifier for players.
Two things are kept after a round ends. First, an outcome row: when it happened, the language, whether each side was human or a bot, each side's guess, whether it was right, and how many messages were exchanged. It carries no player identity.
Second, and this is the part most sites do silently: when both sides of a round were human, the lines you typed are added to a corpus, stripped of any player identifier, and can later be replayed as one side of somebody else's round. That is how the cheapest opponent in the system works — it is a recording of real people rather than a language model. The rules screen says so before you start.
Practical consequence, stated plainly: do not type anything into that box you would mind a stranger reading later. It is a chat with an anonymous person on the internet, and the transcript outlives the round.
What stays on your device
Your theme choice and language preference live in your browser's local storage. They are read by the page you are looking at and never transmitted. Clearing your browser data deletes them.
The machine-readable endpoints
This site publishes /api/v1, /llms.txt and an MCP server so that agents can read it without scraping. Those are outbound: they serve the site's own content and ask nothing about whoever fetches them.
What is never done
For the avoidance of doubt, this site does not:
- sell, rent or share data with data brokers
- run advertising or ad-network scripts of any kind
- use tracking cookies — or set any cookie you did not trigger
- attempt browser fingerprinting
- combine your visits here with your activity on any other site
- ask for, or store, an account
Changes
If this policy changes in substance, the date at the top changes with it. There is no 'may be updated at any time without notice' clause — that clause is what makes policies unreadable.