Last updated: November 3, 2026
This Privacy Policy explains what information MathCheck Pro (“we”, “us”, “the site”) at https://mathcheck.pro collects, how it is used, and the choices you have. By using the site you agree to this policy.
The short version
- You do not need an account, and we do not ask for personal information to use the calculators, tests or guides.
- Calculations run in your browser. The numbers you enter are not sent to our servers.
- We use cookies and similar technologies, including those from advertising partners such as Google, as described below.
Information we do not collect
We do not require you to register, and we do not collect names, addresses, payment details or other personal information to let you use the tools.
Information stored on your device
Some features save data in your browser so they work better. For example, the calculator keeps your last 20 calculations and the math tests keep your best score. This data stays on your device. You can clear it at any time through your browser settings or the clear history option in the calculator.
Information collected automatically
Like most websites, our web server records technical information when you visit, such as your IP address, browser type, device type, the pages requested and the date and time. We use this to run and secure the site, find errors and understand overall use. Server logs are kept for a limited time.
Information you send us
If you use the contact form, we receive your name, email address and message. We use them only to reply and to improve the site, and we keep them only as long as needed for that purpose.
Cookies and similar technologies
Cookies are small files stored on your device. We and our partners use cookies and similar technologies for the purposes described in our Cookie Policy, including remembering settings, measuring use and showing ads.
Advertising
This site is supported by advertising. We use Google AdSense to display ads. Google and other third-party vendors use cookies to serve ads based on a user’s previous visits to this site and other sites on the internet.
Google’s use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and other sites. You can opt out of personalized advertising by visiting Google Ads Settings. You can also opt out of some third-party vendors’ use of cookies for personalized advertising by visiting aboutads.info. To learn how Google uses information from sites that use its services, see How Google uses information from sites or apps that use our services.
If you are in the European Economic Area, the United Kingdom or Switzerland, we ask for your consent through a consent banner before personalized advertising cookies are used, and you can change your choice at any time. Without consent, only non-personalized ads may be shown.
We do not control the cookies set by third parties and do not have access to the information they collect. Their use is governed by their own privacy policies.
Analytics
We may use web analytics services, such as Google Analytics, to learn how visitors use the site, for example which pages are popular. These services may use cookies and collect information such as your approximate location, device and pages viewed. We use the results to improve the site, not to identify individual visitors.
Legal bases for processing
Where data protection law such as the GDPR applies, we process information based on our legitimate interests in running, securing and improving the site, based on your consent where we ask for it, such as for advertising cookies, and where needed to respond to your messages.
Sharing information
We do not sell your personal information. We share information only with service providers who help us run the site, such as hosting, advertising and analytics providers, when required by law, or to protect our rights and the security of the site.
Your rights
Depending on where you live, you may have the right to ask for access to the personal information we hold about you, to correct or delete it, to restrict or object to its use, to receive a copy of it, and to withdraw consent at any time. You can also complain to your local data protection authority.
If you are a California resident, you have rights under California privacy law, including the right to know what personal information is collected and to ask for it to be deleted. We do not sell personal information for money. You can opt out of personalized advertising using the links in the Advertising section above.
To make a request, contact us through the contact page and choose “A privacy request”. We may need to confirm your identity before acting on a request.
Children’s privacy
The site is a general-audience educational site that many students use. It is not directed to children under 13, and we do not knowingly collect personal information from children under 13. If you believe a child has sent us personal information, contact us and we will delete it.
Data security and retention
We use reasonable measures to protect the information we hold, but no method of transmission or storage is completely secure. We keep information only as long as needed for the purposes described in this policy or as required by law.
Links to other sites
The site may link to other websites. We are not responsible for their content or privacy practices, so please read their policies.
International visitors
The site and our service providers may process information in countries other than your own, including the United States.
Changes to this policy
We may update this policy from time to time. The date at the top shows when it was last changed. Continued use of the site after a change means you accept the updated policy.
Contact
If you have questions about this policy, please use the contact page.