Privacy

The short version: we use Cloudflare to serve the site, and your browser remembers one setting. There are no accounts and no sign-up forms. Every page, font and tool is served from this site itself.

What your browser keeps

One thing. If you press the Lamplight or Daylight button, your browser remembers that choice (in its local storage, under the name theme) so the next page opens the same way. It never leaves your device, and clearing your browser's site data removes it.

The calculators and games run entirely in your browser. Numbers you type into them are not sent anywhere and are not saved.

What the web host sees

The site is hosted on Cloudflare. Like every web host, Cloudflare's servers handle the ordinary technical details of each request (such as your IP address and the page asked for) to deliver the page and protect the site from abuse. We do not use those records to identify or profile anyone. Cloudflare's own handling is described in its privacy policy: cloudflare.com/privacypolicy.

Links to other sites

Lessons link to sources such as government agencies and BibleGateway so you can check our work. Those sites have their own privacy practices once you follow a link.

Children

Parts of the site are written for children and families. The site asks no one, child or adult, for a name, an email address or any other personal detail.

If this changes

When the site adds something that collects information (an email list, for example), this page will say what it collects and why.

Last updated 28 October 2026.