Privacy Policy

Last updated 25 August 2026.

The short version

There is no advertising, no third-party analytics, and no tracking pixels on this site. The calculators run entirely in your browser, so the dates you type are never sent to us.

What we collect

Nothing, if you are just using the free tools. The pages load no external scripts, fonts, or images, so no third party observes your visit.

If you buy something, payment is processed by Stripe. Stripe collects your payment details and email address under its own privacy policy; we never see or store your card number. We store the Stripe session identifier, the time of purchase, the IP address and browser user agent used at checkout, and the API key or feed URL issued. We retain that record to provide the product you bought and to respond to payment disputes, which is our legitimate interest in operating the service.

If you use the API or calendar feed, our servers process the request in order to answer it.

Who we share with

Stripe, for payment processing. Cloudflare, which serves this site and runs the API. Nobody else. We do not sell or rent data to anyone.

Your choices

You can request deletion of your purchase record by replying to your Stripe receipt, though doing so deactivates the key or feed URL issued with it, and we may retain what is needed to resolve a payment dispute.