Privacy Policy

Last Updated:

Effective Date: October 1, 2026

At Period Calculator (this website), we believe that intimate menstrual, fertility, and pregnancy health calculations should remain strictly between you and your screen. This Privacy Policy details our uncompromising privacy architecture and your legal rights.

1. Zero Data Collection Architecture (100% Client-Side)

Unlike conventional fertility apps and websites:

  • No Account Creation: We do not offer logins, user profiles, or cloud backups.
  • No Server Processing of Inputs: When you input dates, cycle lengths, temperatures, or symptoms into any calculator on this site, that data is processed entirely in your web browser’s temporary memory using local JavaScript. Your entered dates never travel over the network to our servers or any third-party server.
  • Nothing Is Stored: We do not use localStorage, sessionStorage, IndexedDB, or cookies to retain your health inputs. When you refresh or close your browser tab, all entered data is instantly and permanently cleared.
  • Autocomplete Disabled: Form fields are explicitly configured with autocomplete="off" to prevent your web browser from automatically caching entered dates.

2. Server Logs and Hosting Infrastructure

When you visit any website on the internet, the static hosting provider (e.g., Cloudflare Pages / Vercel) automatically processes standard web server logs necessary for network security, DDoS mitigation, and reliable content delivery:

  • Information Processed: Temporary IP address, browser user-agent, operating system, requested static asset file path, and timestamp.
  • Legal Basis: Legitimate interest under GDPR Article 6(1)(f) to maintain network integrity, prevent cyberattacks, and ensure server uptime. These temporary logs are automatically purged on standard server rotation cycles and are never linked to calculator inputs.

3. Cookies and Tracking Technologies

  • Zero Tracking Cookies: We do not use marketing cookies, behavioral tracking pixels, advertising identifiers, or cross-site tracking scripts.
  • No Third-Party CDNs or Fonts: All visual fonts (Fraunces, Inter) and stylesheets are self-hosted directly from our static domain to prevent third-party logging of font requests.

4. Communications and Email Contact

If you choose to contact us directly via email (infosemakanstr@gmail.com), we use the email address and message contents solely to answer your specific inquiry. We will never sell, rent, or distribute your email address to marketing third parties.

5. Your Legal Rights (GDPR & CCPA)

Under the General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA):

  • Because we collect zero personal health information and operate without user databases, we hold no personal profiles to sell, monetize, or disclose.
  • For any inquiries regarding infrastructure logs or email communications, you may contact our privacy point of contact at infosemakanstr@gmail.com.

6. Children’s Privacy (COPPA Compliance)

This website is designed to provide safe, educational menstrual cycle information for individuals of all ages, including adolescents. Because our platform collects no personal identifying information, names, emails, or persistent identifiers, it operates in strict compliance with the Children’s Online Privacy Protection Act (COPPA).

7. Policy Updates

Any future revisions to our technical infrastructure or privacy policy will be posted on this page with an updated Effective Date.