Privacy and cookies

What stays with you

The calculator runs in your browser. To understand how the calculator is used, we save each result as anonymous numbers only — age, gender, sessions, minutes and the calculated result — with no name, email, IP address, cookie or other identifier, so it cannot be linked to you. These numbers are never sent to Google Analytics. Shared links only point to our homepage.

If you write to us

Messages sent through the contact form — your name, email address and message — are stored so we can read and answer them. They are not shared with anyone and not used for marketing. Ask us, and we will delete a message.

What we measure, if you say yes

With your consent, we use Google Analytics (provided by Google Ireland Ltd.) to count visits and see which pages are viewed, on what kind of device and from which country. This uses cookies named _ga. Google may process this data outside the EEA under its standard safeguards. We use it only to improve the site — not for advertising.

Visitors in the EEA, the UK and Switzerland are asked first. Nothing is measured until you choose Accept. If you decline, Google Analytics is not loaded at all.

Your choice

We remember your choice (and when you made it) in your own browser. You can change or withdraw it at any time; withdrawing deletes the analytics cookies.