Privacy Policy
Brain vs Math ("we", "the site") is built to ask for as little as possible: the games, tools and worksheets all work without you telling us anything about yourself. There are no forms, no signups and no accounts anywhere on the site. This page explains exactly what is and isn't stored when you use the site.
What we store (on your device only)
The site uses your browser's local storage to remember game progress: daily puzzle results, streaks, best scores, worksheet options and your theme preference. This data never leaves your device, is not transmitted to us, and is deleted if you clear your browser data. There are no accounts, logins or profiles.
What we don't collect
- No accounts, passwords or profiles.
- No names, phone numbers or postal addresses.
- No location data.
- No behavioral profiles built by us.
- No email addresses — nothing on the site asks for one.
Hosting
The site is a set of static pages hosted on GitHub Pages. Like any web host, GitHub processes the technical details of each request, such as your IP address, to deliver the page, under GitHub's privacy statement. We do not receive or keep those logs.
Analytics
If enabled, we use privacy-focused, cookieless analytics (Cloudflare Web Analytics) to count page views in aggregate. It does not use cookies, does not fingerprint devices and cannot identify individual visitors.
Advertising
The site does not display advertising and does not load any advertising script, so no advertising cookies are set. If that ever changes, this page will be updated first, with a new effective date, before any ad or ad script appears.
Children
The site is suitable for general audiences, including students. Everything on it — the puzzles, the tools, the worksheets, the free pack download — works without submitting anything at all, and we do not collect personal information from anyone, including children under 13.
Changes
If our practices change (for example, when advertising goes live), this page will be updated first, with a new effective date.
Contact
For any question about this policy, open an issue on GitHub. Please don't put personal information in a public issue — just tell us what you need.