Privacy Policy

Last updated: 2026

This Privacy Policy explains how poolchemcalc.app ("we", "us", "our") handles information when you use our website.

1. Information We Collect

This website does not require account registration and does not directly collect personally identifiable information. All calculations are performed locally in your browser — no calculation data is transmitted to our servers.

2. Google Analytics (GA4)

We use Google Analytics 4 to understand how visitors use our site. GA4 collects anonymised data including pages visited, time on site, and general geographic region. You can opt out via the Google Analytics Opt-out Browser Add-on.

3. Google AdSense

We display advertisements served by Google AdSense. Google uses cookies to serve ads based on your prior visits to this and other websites. You can opt out at Google Ads Settings.

4. Formspree (Contact Form)

If you submit feedback via our contact form, your message and optional email address are processed by Formspree. We only use submitted information to respond to your feedback and do not share it with third parties.

5. Affiliate Links — Amazon & eBay

This site contains affiliate links to Amazon.com and eBay.com. When you click these links, Amazon or eBay may set cookies on your device to track referrals and purchases. We participate in the Amazon Services LLC Associates Program and the eBay Partner Network. We may earn a small commission on qualifying purchases at no extra cost to you. Your data when clicking eBay links is handled by eBay's privacy policy (ebay.com/help/policies/member-behaviour-policies/user-privacy-notice-privacy-policy). Amazon's privacy policy applies to any data collected through Amazon links.

6. Cookies

We do not set our own cookies. Third-party services (Google Analytics, Google AdSense, Amazon) may set cookies on your device. You can control cookies through your browser settings.

7. Data Retention

We do not store personal data on our own servers. Any data processed by third-party services is subject to their respective retention policies.

8. Your Rights

Depending on your location, you may have rights regarding your personal data. Please refer to the privacy policies of Google and Formspree for information on exercising these rights.

9. Children's Privacy

This website is not directed at children under the age of 13. We do not knowingly collect data from children.

10. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated date.

11. Contact

If you have questions about this Privacy Policy, please use our contact page.

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