Cookies

No tracking. No ads. The free calculator stores nothing on your device, and members get just one essential cookie to stay signed in.

• Free calculator: stores nothing on your device. No cookies, no local storage. Your figures live only in the open page and are gone when you reload or close it.
• Session cookie (members only, strictly necessary): keeps you signed in once accounts open. It is HttpOnly and expires.
• Analytics: we plan to use Cloudflare Web Analytics, which does not set cookies. If we add analytics, it will be cookieless only. There is none on the site today.
• No pixels: no Meta, Google Ads, TikTok or other tracking pixels, and no third-party ad scripts.

We do not use advertising or tracking cookies, so we do not show a consent banner. If that changes we will ask first.