Privacy Policy

Last updated: 19 October 2026

What we collect

Our calculators run entirely in your browser. The numbers you enter (such as salary, rent or dates) are not sent to us or stored on our servers.

Fonts, analytics and hosting

Our hosting provider (Cloudflare) processes standard technical data such as IP addresses to deliver and protect the site. Fonts are loaded from Google Fonts, which receives your IP address when you visit. We may use privacy-friendly analytics to count visits.

Email and purchases

If you sign up for the free planner or buy the full version, the email service or store you use (named on the sign-up or checkout page) processes your email address and payment details under its own privacy policy.

Advertising

We may show ads served by Google and its partners. Third-party vendors, including Google, use cookies to serve ads based on your previous visits to this and other websites. You can opt out of personalised advertising by visiting Google Ads Settings or www.aboutads.info.

Contact

Questions about this policy: hello@filsbook.com.