Transaction privacy

Keep the transaction details off this site

The bench works on the device loading the page. Input amounts and checklist selections are not transmitted by our application, retained in a database or saved to localStorage. Reloading starts a new application session, subject to the browser restoring its own form history.

We do not operate buyer accounts, seller profiles, payment collection, advertising tags or cookie-based measurement. The hosting network necessarily handles delivery metadata such as IP address and requested page and can keep operational or security logs.

Do not type buyer addresses, payment references or personal identifiers into these calculators. External safety and tax resources manage their own data practices. If you print a ledger, keep that copy securely.