Privacy Policy

Last updated: 2026-11-09

This policy explains what information CipherMatrix ("we", "the site") processes when you use it. We have tried to keep it short and honest.

Your calculations stay in your browser

The calculators run entirely in your browser using JavaScript. The numbers, matrices and text you enter are not sent to our servers and are not stored by us.

Information stored on your device

Some tools (for example the Matrix Operations calculator) keep a short calculation history in your browser's local storage so you can reopen earlier work. This data never leaves your device and you can delete it with the "Clear history" button or by clearing your browser's site data.

Server logs

Like any website, our hosting provider may automatically record technical information when a page is requested, such as your IP address, browser type, the page requested and the time. This is used for security and operation of the service.

Third-party services

• Google Fonts. The site loads its typefaces from Google Fonts, which means your browser requests font files from Google's servers and Google receives your IP address and browser details. See Google's privacy policy.
• Advertising (Google AdSense). If we display advertisements, they are served by Google AdSense. Google and its partners may use cookies or similar technologies to serve and measure ads, including ads based on your previous visits to this or other websites. You can manage personalised advertising in Google's Ads Settings and learn how Google uses data from sites that use its services at policies.google.com/technologies/partner-sites. Visitors in the European Economic Area, the United Kingdom and Switzerland are asked for consent where the law requires it.

Children

The site is an educational resource, but it is not directed at children under 13 and we do not knowingly collect personal information from them.

Your rights

Because we do not collect personal data through the calculators, there is generally nothing to access or delete. If you believe we hold information about you, contact us at [TODO: set contactEmail in site.config.json and rebuild] and we will respond.

Changes

We may update this policy; the date above shows when it last changed.