Last updated: 21 October 2026.
The short version
You can use every calculator on this site without an account. The marks and scores you type in are processed in your own browser and are not sent to us. We do not sell personal information.
What stays on your device
- Calculator inputs. Your last subjects and scores are saved in your browser's local storage so the calculator remembers them when you return. You can remove them by pressing Clear in the calculator or clearing your browser's site data.
- Display choices. Your light or dark mode choice and the state you last picked are saved the same way.
What our host records
Like every website, our hosting provider and its content delivery network keep standard server logs (such as IP address, browser type and the page requested) to deliver the site and protect it from abuse. These logs are not used to identify you.
Fonts, scripts and cookies
Fonts and scripts are served from our own domain, not from third-party font or advertising networks. The site does not set advertising or tracking cookies. If we add privacy-friendly visitor statistics or advertising in future, this policy will be updated before that happens.
Contacting us
If you email us at info@atarcalculatoronline.com, we use your message only to reply. See the about page and the disclaimer for more about the site.
Changes
Changes to this policy will be posted on this page with a new date.