Privacy Policy

The calculator itself does not collect or transmit anything you type -- there is no server, no account, and no database behind it. Your buy/sell entries are saved in your browser's local storage so you don't lose them between visits; that data stays on your device only, and you can clear it anytime with the "Clear saved data" button on the calculator.

This site may use Google AdSense to show ads, which can set cookies and use device identifiers to personalize ads, subject to Google's own privacy policy. If analytics are added in the future, this page will be updated to describe exactly what's collected.

The "Feedback" button in the corner is the one exception to "nothing leaves your browser": if you use it, the message (and email, if you choose to add one) is sent to us so we can read it and improve the site. It's entirely optional and unrelated to your calculator entries, which are never included.

Questions? Contact us via the details on the homepage.