Privacy Policy
Our Principle: Your Data Stays with You
All calculators run in JavaScript inside your browser; the dates you enter are never sent to our servers and are never stored by us, ever.
What Might We Collect?
We may use anonymous visit analytics (such as visitor counts) to improve the site, without linking them to your identity. We do not sell any data and do not share it with third parties for marketing purposes.
Cookies
We use your browser's local storage only to keep your preferences (such as dark mode) on your device.