Privacy policy
Last updated: July 20, 2026
This policy explains what happens to data when you use matrixcalc.net. The short version: the matrices you type never leave your browser, and the only third parties involved are Google (for advertising) and Vercel (for hosting and anonymous traffic measurement).
The data you enter
All calculations run locally in your browser using JavaScript. The numbers you type into the calculator are never uploaded, stored or logged on any server. Closing the tab discards them.
The only thing saved on your device is your language preference, kept in localStorage under the key matrix.lang. It is not a cookie, it is not sent anywhere, and clearing your browser data removes it.
Advertising — Google AdSense
This site is supported by advertising served by Google AdSense. To do that, Google and its partners may use cookies and similar technologies.
- Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this or other websites.
- Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the Internet.
- You can opt out of personalised advertising at Google Ads Settings. You may also opt out of third-party vendors' use of cookies for personalised advertising at aboutads.info/choices or youronlinechoices.com.
- For users in the European Economic Area, the United Kingdom and Switzerland, Google presents a consent message before serving personalised ads, as required by the EU user consent policy. If you decline, you will still see ads, but non-personalised ones.
More detail on how Google uses data from sites that use its services is available in Google's partner sites policy.
Analytics and hosting
The site is hosted on Vercel and uses Vercel Web Analytics and Speed Insights. These measure page views and performance metrics (such as loading time and layout stability) in aggregate. They do not use cookies and do not build a cross-site profile of you. Vercel, as the host, also processes standard server request data such as IP address and user agent for delivery and security purposes.
Cookies at a glance
| Purpose | Set by | Can you refuse it? |
|---|---|---|
| Advertising / ad measurement | Google AdSense | Yes — via the consent banner (EEA/UK/CH) or Google Ads Settings |
| Language preference (localStorage, not a cookie) | matrixcalc.net | Yes — clear your browser storage |
Children
This site is a study tool and is not directed at children under 13. We do not knowingly collect personal information from them.
Your rights
Since we hold no personal data of our own, requests to access or delete data should generally be directed to Google or Vercel. If you have a question about anything on this site, write to franfactory.store@gmail.com and we will help.
Changes
If this policy changes, the "last updated" date above changes with it. Material changes will be noted on this page.