Privacy Policy

Last updated: 2026-08-09

This Privacy Policy explains what information CalcFern ("we", "us") collects when you visit this website, how we use it, and the choices you have.

Information we collect

Tool inputs: our calculators and text tools run entirely in your browser. The numbers and text you enter are never transmitted to our servers, logged or stored.

Usage data: like most websites, we collect anonymous, aggregated usage data — pages visited, approximate device type, and referring site — to understand what content is useful. This data does not identify you personally.

Information you provide: if you contact us or subscribe to our newsletter, we store the details you submit (such as your email address) solely to respond to you or deliver the newsletter. You can unsubscribe at any time.

Cookies

We use a small number of cookies for essential functionality (such as remembering your light/dark theme preference). Third-party services described below may also set cookies.

Analytics

We may use Google Analytics to collect anonymized statistics about site usage. Google Analytics uses cookies to distinguish visitors. You can opt out with the Google Analytics opt-out browser add-on.

Advertising

We display advertising served by Google AdSense to keep our tools free. Google and its partners may use cookies (including the DoubleClick cookie) to serve ads based on your prior visits to this and other websites. You can opt out of personalized advertising at Google Ads Settings. Learn more in Google's advertising policy.

Data sharing

We never sell your personal information. We only share data with the third-party services named above (analytics and advertising), and only as described.

Data retention & your rights

Contact messages and newsletter subscriptions are kept only as long as needed for their purpose. You may request access to, correction of, or deletion of your personal data at any time via our contact page.

Children's privacy

This site is not directed at children under 13 and we do not knowingly collect personal information from them.

Changes to this policy

We may update this policy from time to time. Material changes will be reflected by the "last updated" date above.