This Privacy Policy describes how QuickCalc Lab ("we," "us," or "our") collects, uses, and shares information when you visit our website at quickcalclab.com (the "Site").

1. Information We Collect

2. How We Use Your Information

We use automatically collected information to analyze site traffic and improve our tools, diagnose technical issues, and comply with legal obligations. We do not use it for any other purpose.

3. Google AdSense & Third-Party Advertising

We may use Google AdSense to display advertisements on this Site. When active, AdSense uses cookies to serve ads based on your prior visits to this and other websites.

• Google's advertising cookies enable it and its partners to serve personalized ads based on your browsing history.
• Opt out of personalized ads via Google Ad Settings.
• Additional opt-out available at aboutads.info.

See Google's Advertising Privacy Policy for full details.

4. Google Analytics

We use Google Analytics to analyze site usage (page views, session duration, etc.) via anonymized, aggregated cookies. You can opt out by installing the Google Analytics Opt-out Browser Add-on.

5. Data Sharing

We do not sell, trade, or rent your personal information to third parties. Anonymized analytics data may be shared with service providers solely for site improvement. We may disclose information if required by law or to protect user safety.

6. Data Retention

Aggregated, anonymized analytics data is retained for up to 26 months. No calculator input data is ever retained because none is collected.

7. Children's Privacy

Our Site is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us at services@quickcalclab.com.

8. Your Rights (GDPR / CCPA)

Depending on your location, you may have the following rights regarding your data:

• Access — Request a copy of data we hold about you.
• Deletion — Request deletion of your personal data.
• Correction — Request correction of inaccurate data.
• Opt-out — Opt out of advertising data collection (see Section 3).
• Do Not Sell (CCPA) — We do not sell personal information.

To exercise any of these rights, contact us at services@quickcalclab.com.

9. Security

We implement reasonable technical and organizational security measures to protect our Site. However, no internet transmission is 100% secure. We encourage you to use caution when sharing any information online.

10. Third-Party Links

Our Site may contain links to third-party websites. We are not responsible for the privacy practices of those sites and encourage you to review their privacy policies independently.

11. Changes to This Policy

We may update this Privacy Policy from time to time. Material changes will be communicated by updating the "Last updated" date at the top of this page. Continued use of the Site after changes constitutes acceptance of the updated policy.