Privacy Policy
Last updated: August 4, 2026
This Privacy Policy describes how comparator.online ("we", "us", or "our") collects, uses, and protects your personal information when you visit our website.
1. Information We Collect
Automatically Collected
- IP address (anonymized)
- Browser type and version
- Operating system
- Referring URL and pages visited
- Time and date of visit
Voluntarily Provided
- Email address (if you sign in with Google)
- Display name and avatar (from Google account)
- Calculation history (if you choose to save)
2. How We Use Your Information
- To provide and improve our calculators
- To analyze aggregate usage patterns (Google Analytics 4)
- To respond to support requests
- To send transactional emails (account, billing)
- To detect and prevent abuse
3. Cookies and Tracking
We use cookies and similar tracking technologies for:
- Analytics (Google Analytics 4, Microsoft Clarity)
- Authentication (Firebase Auth session)
- User preferences (dark mode, calculator presets)
You can control cookies through your browser settings. Disabling cookies may affect site functionality.
4. Third-Party Services
- Google Analytics 4 - traffic analysis
- Microsoft Clarity - heatmaps and session replay
- Firebase Auth - Google sign-in (optional)
- Stripe - payment processing (if you subscribe)
- AliExpress / Amazon / LCSC - affiliate links
These services have their own privacy policies governing their use of your data.
5. Data Storage and Security
Your data is stored on Cloudflare D1 (SQLite) and Firebase servers with industry-standard encryption. We retain data only as long as necessary for the purposes outlined in this policy.
6. Your Rights (GDPR / CCPA)
You have the right to:
- Access your personal data
- Correct inaccurate data
- Request deletion of your data
- Object to processing
- Data portability
Contact: privacy@comparator.online
7. Children"s Privacy
Our service is not directed to children under 13. We do not knowingly collect data from children.
8. Changes to This Policy
We may update this policy from time to time. Changes will be posted on this page with an updated revision date.
9. Contact
Questions? Email: privacy@comparator.online