Privacy policy

Nothing leaves your device. Every calculator on this site runs entirely in your browser — the numbers you type into the water test interpreter, the sizing calculator or any other tool are never transmitted to us or to anyone else, and they are not stored anywhere after you close the page.

We record anonymous events such as “someone used the sizing calculator” through analytics, but never the values entered.

We use Google Analytics to understand which pages are useful and which are not. It collects standard information — pages viewed, approximate location from IP address, device and browser type, and how you arrived.

• We do not sell or share this data.
• We do not build advertising profiles.
• Browser Do Not Track and ad-blocking settings are respected.

This site has no contact forms, no newsletter signup and no quote request. We do not collect names, email addresses or phone numbers, and there is nothing here that results in anyone contacting you.

Where we link to manufacturers, retailers or reference sources, those sites have their own privacy policies and we have no control over them. Some outbound product links may be affiliate links, which means the destination can tell that you arrived from here.

If this policy changes materially — particularly if we ever start collecting anything — this page will be updated to say so.