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Privacy Policy

Last updated: July 2025
Octo Calculator is designed to respect your privacy. All calculations run entirely in your browser — no input data is ever sent to our servers.

1. Who we are

Octo Calculator ("we", "our", "us") operates the website at octocalculator.com. This policy explains how we collect and use information when you visit our site.

2. What data we collect

We collect minimal data to understand how our site is used and to serve advertising. We do not collect any of the values you enter into our calculators — those exist only in your browser.

  • Usage data: Pages visited, time on site, browser type, country, and referrer — collected anonymously via Google Analytics 4.
  • Advertising data: When you consent to advertising, Google AdSense may collect data to serve relevant ads. This includes cookies that track browsing behaviour across sites in the Google network.
  • Cookies: See our Cookie Policy for full details.

3. Legal basis for processing (GDPR)

If you are located in the European Economic Area, we rely on the following legal bases:

  • Consent — for analytics and advertising cookies. You can withdraw consent at any time via the cookie settings banner.
  • Legitimate interests — for basic server logging necessary to operate the site securely.

4. Google services

We use Google Analytics 4 (via Cloudflare Zaraz) to collect anonymised usage statistics. We use Google AdSense to display advertisements. Both services are governed by Google's Privacy Policy.

We have implemented Google Consent Mode v2. Analytics and advertising scripts only activate after you grant consent. Before consent, only anonymised, aggregate signals are sent.

5. Data retention

Google Analytics data is retained for 14 months. We do not maintain any separate database of user data.

6. Your rights

Under GDPR and applicable laws you have the right to:

  • Access the personal data we hold about you
  • Request correction or deletion of your data
  • Object to or restrict processing
  • Withdraw consent at any time (without affecting prior processing)
  • Lodge a complaint with your national data protection authority

Because we do not collect personally identifiable information directly through this site, most of these rights relate to data held by Google as our analytics processor. You can review and manage Google's use of your data at myaccount.google.com and opt out of Google Analytics measurement at tools.google.com/dlpage/gaoptout.

7. Third-party links

Our SEO content may contain links to external websites. We are not responsible for the privacy practices of those sites.

8. Children

Our site is not directed at children under 13. We do not knowingly collect data from children.

9. Changes to this policy

We may update this policy from time to time. The date at the top of this page reflects the most recent revision. Continued use of the site after changes constitutes acceptance.

10. Contact

For privacy-related questions, contact us at: privacy@octocalculator.com

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