Privacy Policy

Effective date: July 20, 2026

Calculator data

All percentage calculations are performed entirely in your web browser. We do not receive, store, or log the numbers you enter into the calculator.

Contact form

If you choose to use the contact form, you provide an email address, optional subject, and message. We use this information only to respond to your inquiry. The message is sent by email and is not stored on our servers or in a database. We do not share, sell, or use your email address for marketing.

Cloudflare Turnstile

The contact form is protected by Cloudflare Turnstile to reduce spam. Turnstile may collect limited technical information to verify that the submission comes from a human. Please refer to Cloudflare's Privacy Policy for details.

Analytics

We do not use cookies or persistent visitor identifiers. Any analytics we collect is aggregate and does not include your calculator inputs, message content, or personal information.

Third parties

We do not embed third-party trackers or advertising. The only external resource loaded on the contact form is the Cloudflare Turnstile challenge script, and it is loaded only when you interact with the form.

Changes

We may update this policy from time to time. The effective date at the top of this page reflects the most recent revision.

Contact us

If you have questions about this privacy policy, use the contact form.