Privacy and local progress

Theory in Play runs its simulations in your browser. There is no account registration, advertising tracker, or payment form on this site.

Your saved progress

Your browser stores recently visited experiments and lesson progress locally so you can resume. This local storage is not a cloud account. Clearing site data in your browser removes it.

Hosting and traffic measurement

Cloudflare delivers and protects the site. Requests pass through its infrastructure, which processes network information such as IP addresses to provide those services. If Cloudflare Web Analytics is enabled, it measures page visits and performance without analytics cookies or cross-site visitor profiles.

Cloudflare privacy policy · About Cloudflare Web Analytics

Links you share

The copy-link control places the experiment parameters and lesson position in the URL. Anyone you send that URL to can see those values. Avoid including personal information in shared URLs.