Cookies & Storage

We keep this simple: we do not use advertising or cross-site tracking cookies, and we do not run third-party analytics that profile you. Because of that, there is no consent banner to click through.

What we store on your device

We use your browser's local storage for essential, functional things that make the site work for you:

• Theme — whether you chose light or dark mode.
• Language — your selected language.
• Learning progress — which free lessons you've explored, so you can pick up where you left off.
• Session id — a temporary id used while you take an assessment.

This information stays on your device and is not used to track you across other websites.

Cookies set by our providers

When relevant, our providers may set their own functional or security cookies — for example Stripe during a payment (fraud prevention) and Vercel for hosting and security. These are limited to operating the service.

Managing storage

You can clear local storage and cookies at any time through your browser settings. Doing so will simply reset your preferences and progress on this site.

See also our Privacy Policy.