This Privacy Policy explains how buildmath.online ("BuildMath", "we", "us") handles information when you visit the website. By using the site you agree to this policy. If you have questions, contactcontact@buildmath.online.
Information we collect
Information you provide
BuildMath has no user accounts. If you email us (directly or through the contact form, which opens your own email app), we receive your name, email address and message. We use it only to reply and to fix reported issues.
Calculator inputs
Numbers you type into calculators are processed in your browser and are not sent to or stored on our servers.
Automatically collected information
Like most websites, our hosting provider records standard log files: IP address, browser type, referring page, pages visited, date and time. We use this information to keep the site secure, diagnose problems and understand overall traffic. It is not used to identify you personally.
Cookies and web beacons
Cookies are small text files stored by your browser. BuildMath itself does not need cookies to work. Third parties — chiefly advertising partners — may set cookies and use web beacons when you visit our pages, as described below. You can block or delete cookies in your browser settings; the calculators will continue to work.
Google AdSense and third-party advertising
- Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website 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 may opt out of personalized advertising by visitingGoogle Ads Settings. You can also opt out of some third-party vendors' use of cookies for personalized advertising atwww.aboutads.info/choices or, in the EU, www.youronlinechoices.eu.
- If personalized advertising is disabled, Google and its partners may still show non-personalized ads, which use cookies for frequency capping, aggregated reporting and fraud prevention.
For details, seeHow Google uses information from sites or apps that use its servicesand Google's advertising policies.
DoubleClick DART cookie
Google, as a third-party vendor, uses cookies — historically known as the DoubleClick DART cookie — to serve ads onbuildmath.online. The DART cookie lets Google serve ads to our visitors based on their visits to this site and other sites on the Internet. You may opt out of the DART cookie by visiting the Google ad and content network privacy policy at policies.google.com/technologies/ads.
Other advertising partners
Advertising partners we may work with (for example Google AdSense or Mediavine) use technologies such as cookies, JavaScript and web beacons in their ads and links. They automatically receive your IP address when this happens. BuildMath has no access to or control over these cookies. Please consult each partner's privacy policy for its practices and opt-out instructions.
Analytics
We use Google Analytics 4 to understand how visitors use the site — for example which pages and calculators are visited, how long visits last, the approximate region (country/city level), device and browser type, and how visitors arrived. Google Analytics sets first-party cookies (such as _ga) to distinguish visits. We use this information in aggregate to improve the site and do not use it to identify individual visitors. Learn more inHow Google uses information from sites that use its services. You can opt out with theGoogle Analytics Opt-out Browser Add-onor by blocking cookies in your browser.
We also use Google Search Console to see aggregated search queries that lead to the site.
Your privacy rights in California (CCPA / CPRA)
If you are a California resident, the California Consumer Privacy Act, as amended, gives you the right to:
- Know what categories and specific pieces of personal information a business has collected about you, the sources, purposes and the third parties it is shared with.
- Delete personal information collected from you, subject to legal exceptions.
- Correct inaccurate personal information.
- Opt out of the sale or sharing of personal information, including sharing for cross-context behavioral advertising.
- Limit the use of sensitive personal information (we do not collect any).
- Non-discrimination for exercising any of these rights.
BuildMath does not sell personal information for money. Cookies set by advertising partners for personalized ads may be considered "sharing" under California law. To opt out, use the opt-out links above, enable a Global Privacy Control (GPC) signal in your browser, or email contact@buildmath.online with the subject "Privacy request". We respond to verifiable requests within 45 days.
Your rights in the EEA, UK and Switzerland (GDPR)
If you are in the European Economic Area, the United Kingdom or Switzerland, you have the right to:
- Access the personal data we hold about you.
- Have inaccurate data rectified.
- Have your data erased.
- Restrict or object to processing.
- Data portability.
- Withdraw consent at any time, without affecting processing carried out before withdrawal.
- Lodge a complaint with your local data protection authority.
Legal bases: we process emails you send us on the basis of our legitimate interest in answering you; server logs on the basis of our legitimate interest in security; and advertising cookies only on the basis of your consent, requested through a consent banner where required. To exercise your rights, emailcontact@buildmath.online; we respond within one month.
Children's information
BuildMath is intended for a general adult audience. 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 promptly.
Data retention and security
Emails are kept only as long as needed to handle your request and any follow-up. Server logs are kept for a limited period for security purposes. We use HTTPS and reasonable safeguards, but no method of transmission over the Internet is 100% secure.
Links to other websites
Our pages may link to external sites. We are not responsible for their content or privacy practices.
Changes to this policy
We may update this Privacy Policy from time to time. The "Last updated" date at the top shows when it was last revised. Continued use of the site after changes means you accept the updated policy.
Contact
Questions about this policy or your data: contact@buildmath.online.