Privacy Policy
Last updated: April 2026
What PhysicStuff is
PhysicStuff (physicstuff.com) is a free, independent physics education website. It provides interactive simulations and explanatory articles. No account or login is required to use any part of the site.
Analytics
PhysicStuff uses Vercel Analytics and Vercel Speed Insights to understand traffic patterns and performance. These tools collect anonymised, aggregate data — page views, referrer, browser type, and country — and do not use cookies or track individual users across sessions.
Cookies
PhysicStuff does not set tracking cookies. A theme preference (light/dark mode) may be stored in your browser's local storage. This data never leaves your device.
Contact form
When you submit the contact form, your name, email address, and message are sent to PhysicStuff via Resend. This data is used solely to respond to your enquiry. It is not shared with third parties or used for marketing.
Newsletter and email updates
If you subscribe to email updates, your email address is stored in a Resend audience list and used only to send PhysicStuff updates. You can unsubscribe at any time using the link in any email you receive.
Third-party services
- Vercel — hosting and infrastructure. See Vercel's privacy policy.
- Resend — email delivery for contact form and newsletter. See Resend's privacy policy.
Advertising
PhysicStuff does not currently run advertising. If advertising is introduced in future, this policy will be updated to describe how ad networks may use cookies and what data they collect.
Contact
Questions about this policy: hello@physicstuff.com