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Privacy Policy

Last Updated: November 11, 2025

WindLoadCalc, LLC ("we", "us", or "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our website and services.

By using our Services, you agree to the collection and use of information in accordance with this Privacy Policy.

1. Information We Collect

1.1 Personal Information You Provide

We collect personal information that you voluntarily provide when you:

  • Create an account: Email address, full name, phone number (optional)
  • Make a purchase: Payment information (processed securely by Stripe), billing address
  • Contact support: Email address, name, support inquiry details
  • Use our calculators: Building parameters, project data, calculation inputs

1.2 Information Automatically Collected

When you use our Services, we automatically collect certain information:

  • Usage Data: Pages viewed, features used, time spent, calculation history
  • Device Information: Browser type, operating system, device type, screen resolution
  • Log Data: IP address, access times, referring URLs, error logs
  • Cookies and Tracking: Session cookies, authentication tokens, preferences

1.3 Payment Information

Payment card details are collected and processed directly by our payment processor, Stripe. We do not store your full credit card information on our servers. We only receive:

  • Last 4 digits of your card
  • Card brand (Visa, Mastercard, etc.)
  • Expiration date
  • Payment status and transaction IDs

2. How We Use Your Information

We use the collected information for the following purposes:

Purpose Description
Service Delivery Process subscriptions, provide access to calculators, generate reports
Account Management Create and maintain your account, authenticate users, manage subscriptions
Payment Processing Process payments, issue refunds, prevent fraud, send receipts
Communication Send transactional emails (receipts, password resets), respond to inquiries
Service Improvement Analyze usage patterns, identify bugs, optimize performance
Security Detect fraud, prevent abuse, enforce Terms of Service
Legal Compliance Comply with legal obligations, respond to legal requests

3. Legal Basis for Processing (GDPR)

If you are located in the European Economic Area (EEA), our legal basis for processing your personal information includes:

  • Contract Performance: Processing necessary to provide Services you've subscribed to
  • Legitimate Interest: Improving our Services, preventing fraud, ensuring security
  • Consent: Marketing communications (you can opt out anytime)
  • Legal Obligation: Compliance with applicable laws and regulations

4. How We Share Your Information

4.1 Service Providers

We share information with third-party service providers who perform services on our behalf:

  • Stripe: Payment processing (see Stripe Privacy Policy)
  • Render: Cloud hosting and infrastructure
  • Gmail/Google Workspace: Transactional email delivery
  • Redis Cloud: Session management and rate limiting

4.2 Business Transfers

If we are involved in a merger, acquisition, or sale of assets, your information may be transferred. We will notify you of any such change.

4.3 Legal Requirements

We may disclose your information if required to do so by law or in response to valid requests by public authorities (e.g., court orders, subpoenas).

4.4 With Your Consent

We may share your information for any other purpose with your explicit consent.

4.5 We DO NOT:

  • Sell your personal information to third parties
  • Share your calculation data with other users
  • Use your data for advertising purposes
  • Share your information with data brokers

5. Data Security

5.1 Security Measures

We implement industry-standard security measures to protect your information:

  • Encryption: All data transmitted over HTTPS/TLS (SSL certificate)
  • Database Security: Encrypted PostgreSQL database with access controls
  • Password Protection: Passwords hashed using bcrypt (industry standard)
  • Access Controls: Role-based access, principle of least privilege
  • Rate Limiting: Protection against brute force attacks and abuse
  • Monitoring: Automated fraud detection and security logging

5.2 Your Responsibility

You are responsible for:

  • Keeping your password confidential
  • Logging out after using shared computers
  • Notifying us immediately of any unauthorized access

5.3 No Absolute Security

While we strive to protect your information, no method of transmission over the internet or electronic storage is 100% secure. We cannot guarantee absolute security.

6. Data Retention

We retain your information for as long as necessary to provide Services and comply with legal obligations:

Data Type Retention Period
Account Information Duration of subscription + 90 days after cancellation
Calculation History Duration of subscription + 90 days after cancellation
Payment Records 7 years (tax and legal requirements)
Support Communications 3 years after last contact
Security Logs 1 year

After these periods, we will delete or anonymize your information, unless longer retention is required by law.

7. Your Privacy Rights

7.1 All Users

Regardless of your location, you have the right to:

  • Access: Request a copy of your personal information
  • Correction: Update or correct inaccurate information
  • Deletion: Request deletion of your account and data
  • Export: Download your calculation history and project data
  • Object: Opt out of marketing communications

7.2 Additional Rights (GDPR - EEA Residents)

If you are in the EEA, you also have:

  • Right to Restriction: Limit how we process your data
  • Right to Portability: Receive your data in a structured, machine-readable format
  • Right to Object: Object to processing based on legitimate interests
  • Right to Withdraw Consent: Withdraw consent at any time
  • Right to Lodge a Complaint: File a complaint with your local data protection authority

7.3 Additional Rights (CCPA - California Residents)

If you are a California resident, you have:

  • Right to know what personal information we collect
  • Right to know if we sell or share your personal information (we don't)
  • Right to delete your personal information
  • Right to non-discrimination for exercising your rights

7.4 How to Exercise Your Rights

To exercise any of these rights, contact us at:

  • Email: privacy@windloadcalc.com
  • Or through your account settings for data export/deletion

We will respond to your request within 30 days.

8. Cookies and Tracking Technologies

8.1 What We Use

We use the following types of cookies and tracking technologies:

Type Purpose Duration
Essential Cookies Authentication, session management, security Session or 30 days
Functional Cookies Remember preferences, saved calculations 1 year
Analytics Cookies Usage statistics, performance monitoring 2 years

8.2 Your Choices

You can control cookies through your browser settings. Note that disabling essential cookies may affect functionality.

9. Third-Party Links

Our Services may contain links to third-party websites (e.g., documentation, code references). We are not responsible for the privacy practices of these external sites. We encourage you to review their privacy policies.

10. Children's Privacy

Our Services are not intended for individuals under 18 years of age. We do not knowingly collect personal information from children. If you believe we have collected information from a child, please contact us immediately.

11. International Data Transfers

Your information may be transferred to and processed in the United States or other countries where our service providers operate. These countries may have different data protection laws than your country.

For EEA residents, we ensure appropriate safeguards are in place, such as:

  • Standard Contractual Clauses approved by the European Commission
  • Adequacy decisions by the European Commission
  • Service providers certified under recognized privacy frameworks

12. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of material changes by:

  • Posting the updated Privacy Policy on our website
  • Updating the "Last Updated" date
  • Sending email notification to your registered email address

Your continued use of our Services after changes become effective constitutes acceptance of the updated Privacy Policy.

13. Contact Us

WindLoadCalc, LLC

Data Protection Contact:

Email: privacy@windloadcalc.com

General Support: support@windloadcalc.com

Website: windloadcalc.com


If you have any questions or concerns about our privacy practices, please don't hesitate to contact us. We're here to help.