Privacy Policy

This page describes what happens to data when you use fourfunctioncalculator.com. The short version: your calculations never leave your device, and the site carries no advertising.

Your calculations

Every calculator on this site runs entirely in your browser. The numbers you type are not sent to any server, are not logged, and are not visible to anyone but you. The calculation tape on the home page exists only in the open tab and is discarded when you close or reload it.

Some calculators copy your inputs into the address bar so a result can be shared as a link. That happens on your device only. A link is transmitted somewhere only if you choose to send it.

Browser storage

If you switch the site between light and dark mode, that single preference is saved in your browser’s local storage so the page remembers it next time. It contains no identifier and is never read by anyone else. Clearing your browser’s site data removes it.

Advertising and tracking

This site displays no advertising and embeds no advertising or analytics scripts from third parties. There are no tracking pixels, no social widgets and no fingerprinting.

If that ever changes, this page will be updated before the change goes live, and the date at the bottom will change with it.

Server logs

Like nearly every website, the web server records standard request logs — the page requested, the time, the referring page, the browser’s user-agent string and the IP address the request came from. These are used to keep the site running and to investigate abuse or errors. They are not combined with anything else, not used to build a profile of you, and not shared with advertisers.

Cookies

The site sets no tracking cookies. WordPress, which publishes these pages, may set a session cookie for a logged-in administrator; ordinary visitors are not logged in and receive none.

Your rights

Because the site does not collect personal data from visitors beyond standard server logs, there is normally nothing to access, correct or delete. If you have written to us by email, you can ask for that correspondence to be deleted at any time by replying to it.

If you are in the European Economic Area or the United Kingdom, you have rights under the GDPR including access, rectification, erasure and objection. Requests can be sent to hello@fourfunctioncalculator.com.

Children

These calculators are used by school students, and the site is designed with that in mind: it asks for nothing, stores nothing about you, and shows no advertising. No account can be created and no personal information is requested from anyone of any age.

Who is responsible

The data controller is DigiKasvu, a sole proprietorship registered in Finland (Business ID 3612228-8). Contact: hello@fourfunctioncalculator.com.