Privacy policy

Numbers you enter

The calculators run in your browser. What you type and the results you get stay on your device: they are not sent to us or to anyone else, and we cannot see them.

Anonymous visit counts

We count visits with PostHog, set up to collect as little as possible. When a page opens, and when you press Calculate, Load example, a copy button, the language switch or a link to another site by the author, the page sends a small anonymous event.

That event holds the page address without anything after a question mark, the page name, the language, the name of the site you came from (for example google.com) and a random ID that lasts only while the tab is open. It never holds numbers you typed, results, or pasted text. IP addresses are not stored with these events.

There are no cookies and no sign-in. If your browser sends Do Not Track or Global Privacy Control, the page sends nothing at all.

What stays in your browser

Your light or dark choice is saved in your browser (local storage) so the next page matches it. The random tab ID is kept in session storage and disappears when you close the tab. Neither is a cookie.

Email, if we add it

We plan to add an optional box where you can leave your email address. It will be your choice, it will be used only to send you the guides you asked for, and every message will carry a link that lets you unsubscribe in one step.

Ads, if we add them

BiostatKit may show advertising in the future. If that happens, a cookie consent box will appear first, and this page will be updated before any ad cookies are used.

Contact

Questions about this page: hotro@vuduykien.com.