Who is responsible for this site
BaleMath (“we”, “us”) is operated by:
Valentijn Destellirer
contact@balemath.com
For everything described in this policy, that is the data controller you can contact.
The calculators run entirely in your browser
Calculations use JavaScript on your own device. BaleMath has no accounts, logins or database for saving your plans. Shared plan links, links between calculators and language links carrying a valid calculation can include entered values in the URL. Opening such a link sends its URL to the hosting provider as part of the page request; it may be processed in the delivery and security logs described below. URLs can also remain in browser history, bookmarks or copied messages, and anyone with a plan link can read its values. Closing a tab does not delete those copies. Avoid including information you do not want to share in plan links.
If you explicitly choose a measurement system or currency, BaleMath stores those presentation choices in your browser under balemath.preferences.v1. The record contains only the selected unit system and currency. It stays on your device, is never sent to BaleMath, and does not contain calculator inputs, results, identifiers, or analytics data. You can remove it through your browser’s site-data settings.
Data we process ourselves
Server logs. The site is delivered by Cloudflare, Inc. To deliver and secure the site, Cloudflare processes limited request and security data such as your IP address, the URL requested, browser or device information, traffic-routing data, and timestamps. This happens for site delivery, security, abuse prevention, and troubleshooting, on the legal basis of our legitimate interest in keeping the site online and secure (Art. 6(1)(f) GDPR). BaleMath does not use this data to identify visitors and does not export or keep its own visitor-log dataset. Cloudflare applies retention according to its service configuration and policies. BaleMath is hosted on Cloudflare Pages, so this provider-side delivery and security logging is handled by Cloudflare under its own documentation and policies.
Fonts and styles are served from our own domain. Apart from the processing Cloudflare needs to deliver and secure the site, reading BaleMath does not send data to analytics, advertising, email, or other third-party services.
No advertising or analytics at launch
BaleMath does not currently load Google AdSense, Google Analytics, or any other advertising or analytics service. No advertising or analytics script receives information about your visit, and the calculators do not depend on any such service.
No email collection at launch
BaleMath does not currently provide an email signup or submission form, so it does not collect or store email addresses through the site.
Cookies
BaleMath does not set non-essential cookies. Cloudflare may set a strictly necessary security cookie when required to protect or deliver the site; it is not used by BaleMath for analytics or advertising. No consent banner is currently shown because there are no optional cookies to choose from. The full details are in our cookie policy.
International transfers
Cloudflare, Inc. is a U.S.-based global company and may process or transfer the limited delivery and security data described above outside the EEA. Cloudflare states that it uses appropriate safeguards for international transfers, including EU–U.S. Data Privacy Framework certification and Standard Contractual Clauses where applicable; see Cloudflare's privacy policy.
How long data is kept
BaleMath keeps no calculator inputs, email signup records, analytics records, or visitor-log dataset. Cloudflare controls retention of the limited provider-side delivery and security data as described above.
Your rights under GDPR
You have the right to access your personal data (Art. 15), to have it corrected (Art. 16) or erased (Art. 17), to restrict processing (Art. 18), to data portability (Art. 20), and to object to processing based on legitimate interest (Art. 21). Where processing is based on consent, you can withdraw it at any time without affecting the lawfulness of what happened before. You also have the right to lodge a complaint with your local data protection authority.
Because we hold essentially no data about you, most requests will end with us pointing you to the processor that actually holds it — but write to contact@balemath.com and we will help you get there.
Children
BaleMath is not directed at children, and we do not knowingly collect any personal data from anyone under 16.
Changes to this policy
If we add a tool or a service that changes how data is handled, we will update this page before it ships and change the date below.
Last updated: September 6, 2026.