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Privacy policy

Effective date: 4 July 2026. The short version: this site is built to know as little about you as possible.

What we don't collect

• No accounts, no forms, no cookies. The site sets no cookies and uses no advertising or social trackers.
• Calculator inputs stay in your browser. Prices, origins, and options you enter are processed locally by JavaScript and are never transmitted to us. Shareable links encode your inputs in the URL only when you copy them yourself.

What is processed technically

• Hosting. The site is served by Cloudflare Pages. Like any web server, Cloudflare processes your IP address and request metadata to deliver pages and protect against abuse. See Cloudflare's privacy policy.
• Fonts. Web fonts are loaded from Google Fonts, which means your browser requests font files from Google servers and transmits your IP address in doing so. See Google's privacy policy.
• Aggregate statistics. If enabled, we use Cloudflare Web Analytics, a cookieless, privacy-first measurement tool that does not track individuals across sites.

External links

Guides link to official sources (ch.ch, post.ch, bazg.admin.ch, estv.admin.ch) and occasionally to shops or carriers. Their privacy practices are their own.

Changes & contact

If the site's setup changes — for example, if advertising is added — this policy will be updated first. Questions: contact page.