Legal
Privacy
Specific rather than thorough-sounding. Every line below describes something this site actually does, and the ones about what it refuses to do are the point of the page.
Reading this site
Page visits are counted, and that is all. The measurement is Vercel Web Analytics: it records which page was opened, roughly where in the world from, and what kind of device — never a name, an address, or anything you typed. No advertising network is involved, nothing follows you to another site, and no profile of you is built or sold. Vercel state that this measurement uses no cookies; that is their claim about their own service rather than something this site can verify from the inside, and it matches what the code loaded here does. The web fonts are served from this site rather than from a font network, so opening a page does not announce you to a third party either.
Three kinds of address are never measured
The practice's own admin screens, the student area, and any address that is itself a key — a testimonial link, or a confirm-or-unsubscribe link from an email. The signed-in areas are excluded because a student's addresses say what they are studying, and handing those to a measurement service would go around a promise made further down this page rather than keep it. The key-bearing links are excluded because the address is the credential: anyone holding it could act as you. Everywhere else the address is recorded in full, query string included, because that is how a campaign the practice runs would ever be told apart from a search result.
What is kept in your browser
Four small things, none of them for tracking: whether you are signed in, which theme you chose, whether you have already seen the opening animation, and — only if you asked the playground to remember your path through it — that path. There is no advertising cookie and no analytics cookie. Signing out clears the session, and the playground's memory has a button that erases it.
Writing to the practice
The contact form records the name, email address, subject and message you send, so that somebody can reply and so the practice has a record of what was asked. Every form on the site also carries a hidden field and a timer, purely to catch automated spam — neither records anything about you, and nothing from them is stored.
Asking for a session
A booking request is a message, not a reservation: it arrives in the same inbox as the contact form, carrying your name, email, the service and time you asked for, what brings you, and what you wrote in the medical box. The medical answer matters and is read before anything is agreed — some breath practices are contraindicated in pregnancy, and in cardiovascular, respiratory and seizure conditions, which is why the form asks. It is visible to the practice, not published, and never used for marketing.
The Signal
Subscribing records your email address and whether you read English or Korean. It is a double opt-in list by construction — a subscription counts only once a link in a confirmation letter has been clicked, and until then nothing is sent to you. Every letter carries an unsubscribe link that works without signing in. Leaving marks the record as unsubscribed rather than deleting it, deliberately: the record of having withdrawn is what makes sure a later import cannot quietly put you back. The list is used to send the letter and nothing else — never sold, rented, or handed to another practice.
Having an account
An account holds your email address, the name you choose to display, and which language you read in. Passwords are handled by the authentication service and are never visible to this site or to the practice — the practice cannot see your email address either, which is a consequence of where it is stored rather than a courtesy. Account mail — confirming a signup, resetting a password — is delivered by an email provider, which necessarily sees the address it is delivering to.
Your practice journal is private to you
This is worth stating precisely, because it is the promise most easily made and least often kept. What you write in the journal — the note, the temperature and texture, where in the body you marked it and how strongly — is readable by your account and by nothing else. That is not a setting or an intention: it is the only rule the database has for that table, and unlike almost every other rule in this system it has no exception for the practitioner. Dr. Kwon cannot open your journal. He sees what is in it if you bring it to a session and show him, and otherwise not at all. The same is true of which lessons you have finished and how far through a recording you are.
The playground remembers only for you
The path you take through the star map is kept in your own browser, and copied to your account only if you type keep. Under the same rule as the journal: yours to read, yours to delete, readable by nobody else — there is deliberately no way for the practice to see it at all. It holds the last two dozen steps and no more, and typing forget erases both copies. If you speak to the console rather than type, what you say is turned into text by your browser's own speech service, which on some browsers means the audio goes to the browser maker; the page says so before you press the button. What you then send to the console is answered by a language model run by Anthropic, which receives that conversation and the trail — and stores nothing of it here.
Testimonials are published under your name if you say so
An account you send through a testimonial link is held unpublished until somebody reads it and decides. If you asked to be named, publishing it makes your name public along with what you wrote; if you asked to be anonymous, the database will not store a name against it at all. Consent is recorded with the date, and nothing appears on the site without it.
Who else ever sees any of this
Four companies, each doing one job. Supabase hosts the database and handles signing in. Vercel hosts the site and provides the visitor counts above; as the host it necessarily sees the ordinary web-server record of every request, including IP addresses. An email provider delivers account mail. Anthropic answers the playground console when it is used. They are suppliers, not audiences: each holds what it needs for its job and none of them is given anything to use for its own purposes. Nothing on this site is sold or traded to anyone, at any price, for any purpose.
IP addresses
This site's own code reads your IP address in exactly one place: to limit how often the playground console can be asked a question, held in memory for a few minutes and never written down. Beyond that, IP addresses appear where they appear for any website — in the host's request logs, which the practice does not mine and does not join to anything else.
Payment details never reach this site
Payments are not connected yet. When they are, card details will go directly to the payment processor and will never pass through or be stored here. What the practice will keep is the processor's record of the transaction — what was bought, for how much, and the email it was bought under — and nothing that could be used to charge you again.
Changing or removing what is held
Ask, through the contact page, and it will be done by hand — there is no self-service delete button for most of it, and saying so is more useful than implying otherwise. Two things you can already erase yourself from inside your account: journal entries, and a kept playground trail. Nothing else expires on a schedule, because nothing in this system runs one; what is held is held until you ask for it to go.
If this page and the site ever disagree
The site is wrong and will be fixed. Every line here was written from what the code actually does rather than from a template, and the measurement rules in particular are enforced by a check that fails the build if a new page starts being recorded when it should not be, or stops being recorded when it should.
To ask what is held about you, to have it changed, or to have it removed, use the contact page. What this practice is and is not — and the limits of everything offered here — is set out in the disclaimer. Like that page, this one will be reviewed by a lawyer before any payment is taken through this site, and updated where the review requires it.