Last updated: 1 September 2026. Version 2026-09-01.
This site uses the minimum, and it is worth being precise about it because almost nobody is.
On the sales pages
This site writes no cookies at all. If your network sets one saying which country you are coming from, we read it to show the price in your currency; if it is not there, we use the browser signal. It identifies nobody and we do not create it.
There is no third-party analytics. No advertising pixels. No social network cookies. We do not share your browsing with anyone, because we do not measure it.
That is why this site does not show you a consent banner: there is nothing to consent to.
In the app, once you have an account
A session cookie, so you do not have to sign in every time. It is strictly necessary: without it there is no way to keep you signed in. It goes when you sign out.
And browser local storage for two specific things: the draft of your questionnaire while you answer it, and the sets you check when training with no connection, which send themselves when you are back online.
The typefaces
The page loads fonts from Google Fonts, which sees your IP address when serving them. It is the only third-party request this site makes.
How to control them
You can clear cookies from your browser. If you clear the session one, you will need to sign in again with a code.