Your inputs stay in the browser.

Current behavior

• Calculations run in browser JavaScript.
• No account, cookie banner, analytics tag, advertising script, or affiliate tracker is included.
• Input values are not stored after the page is closed or reset.
• The “Copy result” action writes the displayed summary to your clipboard only after you press the button.

The local development server can receive ordinary page requests from this computer. It binds only to 127.0.0.1 and does not write request logs to an application database.

Production is separate

For privacy questions, data-access requests, or corrections, contact jingshuicc@gmail.com. Please do not send payment details or other sensitive information by email.

Hosting-log retention, analytics consent, and the operating-entity details remain subject to the final formal privacy policy.

Privacy policy version: September 2, 2026.