Draft: owner to review
Privacy policy
Plain English, short version: we don't have accounts, we don't sell data, and your calculator inputs stay on your device.
Calculator inputs
Everything you type is calculated in your browser. Inputs go into the page address (URL) so you can share a link; they're only sent anywhere if you share that link yourself. We never send input values to analytics or ads.
Storage on your device
We store one item in your browser's local storage: dt-theme, your dark/light choice. Our own code sets no cookies.
Analytics
We don't run analytics right now. If we add them, they'll be cookieless and aggregate (page views, referrers, device type), and this page will say so.
We don't collect email addresses right now. If we add a signup, it will use double opt-in, be used only for what it says, and have an unsubscribe link in every email.
Ads
We don't show ads right now. If we do, they'll be served by Google, which may use cookies or identifiers, with consent where required. See how Google uses information from sites that use its services and Google ad settings.
Hosting
Our host keeps standard server logs (like IP address and browser type) for security and reliability.
Children
This site isn't directed to children under 13.
Requests and questions
Contact details will be listed here once available.
Last updated Sep 28, 2026.