Privacy Policy
Short, because this site collects nothing.
What We Collect
No personal information and no calculations. There is no account system, no contact form and no advertising code on this site. Everything you type into the calculator or a tool is processed on your own device and never transmitted.
Stored on Your Device
A couple of small preferences are kept in your browser's own storage so the site behaves consistently between visits, such as your chosen text size. They stay on your device, are readable only by this site, and disappear when you clear site data.
Requests to Other Services
Loading a page fetches fonts and an icon set from this site's own files. Google Analytics records anonymous visit counts so I can see which pages are worth keeping; it does not receive anything you type. GitHub, which hosts these pages, keeps its own server logs, and its policy governs those.
Children
Since no personal information is requested or stored, there is nothing collected from anyone of any age. That is what makes the site usable on school devices without a data agreement.
Changes
If this ever stops being accurate, the page is updated before the change goes live, and the repository history shows exactly when and what changed.