Privacy Policy

Last Updated: June 17, 2026

Welcome to QuickMath ("we," "our," or "us"), operated at zexio.top. Your privacy is critically important to us. This Privacy Policy explains how we collect, use, disclose, and safeguard your information. It complies with the California Consumer Privacy Act (CCPA), the California Online Privacy Protection Act (CalOPPA), the Children's Online Privacy Protection Act (COPPA), and the General Data Protection Regulation (GDPR).

1. Information We Collect

QuickMath is designed with privacy first. We collect minimal information by design.

Data Type	Collected?	Purpose	Retention
Calculator inputs	No	All calculations happen locally in your browser. No data is sent to our servers.	N/A
IP Address	Anonymized	Plausible processes IPs for geo-location (country level) only. Anonymized immediately.	Not stored
Cookies	No	We do not use any tracking cookies, marketing cookies, or persistent identifiers.	N/A
Browser / Device Info	Aggregated only	Plausible collects anonymized browser, device, OS, and screen size data.	Aggregated, not identifiable
Referring Website	Aggregated only	Referring URL to understand how visitors find our site.	Aggregated, not identifiable
Email Communications	If you email us	We receive your email address and message solely to respond to your inquiry.	Deleted upon request

2. Third-Party Services

Service	Purpose	Data Shared	Privacy Policy
Cloudflare	CDN, DDoS protection, SSL	IP address (temporary), browser fingerprint (security). Cloudflare does not sell your data.	Cloudflare Privacy
Plausible Analytics	Privacy-friendly analytics	Anonymized page views, referrer, device type, country. No cookies. No personal data.	Plausible Privacy

3. Your Rights (CCPA — California Residents)

Under the California Consumer Privacy Act (CCPA), California residents have the following rights:

• Right to Know: Request disclosure of what personal information we collect, use, or disclose about you.
• Right to Delete: Request deletion of any personal information collected about you.
• Right to Opt-Out: Opt out of the sale of your personal information. QuickMath does not sell any personal information.
• Right to Non-Discrimination: We will not discriminate against you for exercising your CCPA rights.

To exercise any of these rights, contact us at 15332396785@163.com with subject "CCPA Request." We will respond within 45 days.

4. COPPA Compliance (Children's Privacy)

QuickMath is not directed at children under 13. We do not knowingly collect personal information from children under 13. If we learn a child under 13 has provided personal information, we will delete it immediately. Contact us at 15332396785@163.com if you believe your child has provided us with personal data.

5. GDPR Compliance (EU Visitors)

For visitors from the European Economic Area:

• Data Controller: QuickMath (zexio.top). Contact: 15332396785@163.com.
• Legal Basis: Analytics processing based on legitimate interest using Plausible Analytics (no cookies, no personal data).
• Your Rights: Right of access, rectification, erasure, restriction, portability, and objection. Email us to exercise these rights.
• International Transfers: Cloudflare may process data in the US and other countries. Cloudflare participates in the EU-US Data Privacy Framework.

6. CalOPPA Compliance

• We do not track users across third-party websites.
• We do not respond to Do Not Track (DNT) signals as we do not engage in cross-site tracking.
• Users can visit our site anonymously — no registration required.

7. Data Security

• SSL/TLS encryption for all data transmitted between your browser and our servers.
• No storage of calculator inputs — all processing is client-side.
• Regular security reviews of dependencies and infrastructure.

8. Changes to This Policy

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

9. Contact

• Email: 15332396785@163.com
• Website: https://zexio.top

Last reviewed June 17, 2026. Compliant with CCPA, COPPA, CalOPPA, and GDPR.