Effective Date: November 18, 2025
Key Points:
- We do NOT collect or store any personal health data or measurements
- All calculations happen in your browser
- Analytics and advertising cookies are enabled by default to fund this free resource
- Easy opt-out available - use the controls in Section 14 below
1. Data Controller Information
This website ("Service") is operated as an educational resource. For data protection queries, please use the contact information provided in Section 14 below.
We are committed to protecting your privacy and comply with applicable data protection laws including GDPR (EU) and CCPA (California).
2. Information We Collect
2.1 Information We Do NOT Collect
We do NOT collect, store, or transmit:
- Any health measurements or calculation inputs
- Personal health information
- Names, emails, or other personal identifiers
- User accounts or profiles
All calculator functions operate entirely within your browser using JavaScript. No data is sent to our servers.
2.2 Information We Automatically Collect
Through cookies and similar technologies, we collect:
- Analytics Data (via Google Analytics):
- Pages visited and time spent
- Browser type and device information
- General location (country/city level)
- Language preferences
- Referring websites
- Anonymized IP addresses
- Advertising Data (via Google AdSense):
- Ad interaction data
- Frequency capping information
- Ad personalization data (if not opted out)
3. Legal Basis for Processing (GDPR)
We process data based on:
- Legitimate Interests: Analytics to improve our service and understand user behavior
- Legitimate Interests: Advertising to fund this free educational resource
Both analytics and advertising cookies are enabled by default to support our educational mission. You can opt out at any time using the controls in Section 14 below. Your fundamental rights and freedoms are protected through easy opt-out mechanisms and no collection of personal health data.
4. How We Use Information
We use collected information to:
- Improve website functionality and user experience
- Analyze usage patterns and popular features
- Display relevant advertisements
- Comply with legal obligations
- Prevent fraud and enhance security
5. Cookies and Tracking Technologies
5.1 Types of Cookies We Use
| Type | Purpose | Duration |
|---|
| Essential | Language preferences, cookie consent | 1 year |
| Analytics | Google Analytics tracking | 2 years |
| Advertising | Google AdSense | Various |
5.2 Managing Cookies
You can control cookies through:
- On-site Controls (Recommended): Use the toggle switches in Section 14 below for immediate opt-out
- Browser settings (block all cookies - may affect site functionality)
- Google Ad Settings: adssettings.google.com
- Google Analytics Opt-out: tools.google.com/dlpage/gaoptout
- NAI Opt-out: optout.networkadvertising.org
6. Data Sharing and Third Parties
We do not sell your personal information. We share data only with:
- Google Analytics: For website analytics (with IP anonymization)
- Google AdSense: For advertising services
- Legal Authorities: When required by law
These services have their own privacy policies:
7. Data Retention
We retain:
- Analytics data: 26 months (Google Analytics default)
- Cookie data: As specified in cookie table above
- Calculator data: Never stored (processed only in browser)
8. International Data Transfers
Data may be processed in countries outside your residence, particularly:
- United States (Google services)
We ensure appropriate safeguards through Google's compliance with Privacy Shield and Standard Contractual Clauses.
9. Your Privacy Rights
9.1 Rights for All Users
- Opt-out of analytics and advertising
- Clear cookies at any time
- Use the calculator without any tracking (private browsing mode)
9.2 GDPR Rights (EU Residents)
You have the right to:
- Access: Request what data we have about you
- Rectification: Correct inaccurate data
- Erasure: Request deletion of your data
- Restriction: Limit processing of your data
- Portability: Receive your data in portable format
- Object: Object to data processing
- Withdraw Consent: Withdraw consent at any time
- Complaint: Lodge complaint with supervisory authority
9.3 CCPA Rights (California Residents)
You have the right to:
- Know: What personal information we collect and how we use it
- Delete: Request deletion of your personal information
- Opt-out: Opt-out of sale of personal information (we don't sell data)
- Non-discrimination: Equal service regardless of privacy choices
To exercise these rights, please use the contact information in Section 14.
10. Children's Privacy
This service is NOT intended for children under 18.
We do not knowingly collect data from minors. If you believe a child has accessed our service, please contact us immediately.
11. Data Security
We implement appropriate technical and organizational measures including:
- HTTPS encryption for all connections
- No storage of personal health data
- Regular security assessments
- Limited access controls
However, no internet transmission is 100% secure. Use the service at your own risk.
12. Do Not Track Signals
We honor Do Not Track browser settings. When DNT is enabled, Google Analytics tracking is disabled.
13. Changes to This Policy
We may update this policy periodically. Material changes will be notified through:
- Notice on website homepage
- Updated "Effective Date" at top
Continued use after changes constitutes acceptance.
14. Cookie Settings & Data Control
Manage Your Privacy Preferences
Default Settings: Analytics and advertising cookies are enabled by default to fund this free educational resource. You can opt out at any time using the controls below - your preferences are saved immediately.
Note: Keeping cookies enabled helps fund this free educational resource through relevant advertising and allows us to improve the service based on usage analytics.
What happens when you opt out:
- Analytics cookies are blocked
- Advertising cookies are blocked
- Less relevant ads may still be shown (generic ads)
- We cannot improve the site based on usage data
15. Contact Information
For privacy inquiries or to exercise your rights:
Email: penisfact@proton.me
Response time: Within 30 days
Please include "Privacy Request" in your email subject line for proper routing.
For Google-related privacy concerns, contact Google directly through their privacy help center.