Privacy

Your water data stays on your device.

No account is required. Pool and spa profiles, test details, chemical amounts, saved products, costs, notes, and maintenance history are stored locally in your browser and are not sent to analytics or advertising services.

Local data

You may delete local records at any time. Browser clearing, private browsing, device loss, or storage restrictions can also remove them.

Analytics

If privacy-preserving analytics are enabled later, events may record that a calculator was opened or completed or that a profile was created. Event payloads will not include chemistry values or user-entered names.

Advertising

This site may use Google AdSense to display advertising. When advertising is enabled, Google and its partners may use cookies, local storage, IP addresses, device information, and ad-interaction data to provide, personalize, and measure ads. Pool profiles, water-test readings, chemical amounts, saved product names, notes, and maintenance history are never included in ad requests. Learn more in Google's advertising policies.