What happens to your time card
Everything you enter is worked out inside your browser, by code that runs on your device. Nothing you type is sent to a server. There is no account to create and no form that submits.
So that your card is still there if you close the tab and come back, the browser keeps a copy in its own local storage on your device. That copy never leaves the device. Pressing Clear the card deletes it, and so does clearing your browser data.
Downloads
The Excel file and the print view are generated on your device from what you entered. They are not uploaded anywhere, and we never see them.
Analytics and advertising
The site loads nothing from any third party — not fonts, not scripts, not images. At the moment it runs no analytics and shows no advertising. If either is added, this page will say exactly what is loaded, what it can see, and how to opt out, before it goes live. Any advertising would follow Google's publisher policies and would never have access to what you type into a calculator.
Questions
If anything here is unclear, or you think the site is doing something this page does not describe, we want to know. A contact address will appear here once the site is live.
Last updated 11 September 2026.