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Privacy Policy

Last updated: 10/3/2025

1. Introduction

Welcome to LumoCalculator ("we," "our," or "us"). We respect your privacy and are committed to protecting your personal data. This privacy policy explains how we collect, use, and safeguard your information when you use our website and services.

LumoCalculator is designed with privacy-first principles. All calculations are performed locally on your device, ensuring that your sensitive calculation data never leaves your browser.

2. Information We Collect

2.1 Information You Provide

We may collect information you voluntarily provide when you:

  • Contact us through our contact form
  • Subscribe to our newsletter
  • Report bugs or provide feedback

2.2 Calculation Data

Important: We do NOT collect, store, or transmit any of your calculation inputs or results. All calculations are performed entirely within your browser using client-side JavaScript. Your calculation data remains private and never reaches our servers.

2.3 Automatically Collected Information

When you visit our website, we may automatically collect certain technical information, including:

  • IP address and general location information
  • Browser type and version
  • Device type and operating system
  • Pages visited and time spent on our site
  • Referring websites and search terms
  • Site usage patterns and performance data

3. How We Use Your Information

We use collected information for the following purposes:

  • Service Operation: To provide, maintain, and improve our calculator services
  • Technical Support: To respond to your inquiries and provide customer support
  • Website Analytics: To understand how users interact with our site and optimize user experience
  • Security: To detect, prevent, and address technical issues and security threats
  • Legal Compliance: To comply with applicable laws and regulations

4. Information Sharing and Disclosure

We do not sell, trade, or rent your personal information to third parties. We may share your information only in the following circumstances:

  • Service Providers: With trusted third-party service providers who assist us in operating our website (e.g., hosting, analytics)
  • Legal Requirements: When required by law or to respond to legal process
  • Safety and Security: To protect our rights, property, or safety, or that of our users
  • Business Transfer: In connection with a merger, acquisition, or sale of assets

5. Cookies and Tracking Technologies

5.1 Types of Cookies We Use

  • Essential Cookies: Necessary for basic website functionality and security
  • Analytics Cookies: Help us understand how visitors use our site to improve user experience
  • Preference Cookies: Remember your settings and preferences

5.2 Managing Cookies

You can control cookies through your browser settings. However, disabling essential cookies may affect website functionality.

6. Third-Party Services

Our website may use third-party services for analytics, hosting, and other purposes. These services have their own privacy policies:

  • Google Analytics: For website usage analytics (if implemented)
  • Hosting Providers: For website hosting and content delivery
  • Email Services: For communication and newsletters

7. Data Security

We implement appropriate technical and organizational security measures to protect your information:

  • SSL encryption for data transmission
  • Regular security assessments and updates
  • Access controls and authentication measures
  • Secure hosting infrastructure

However, no method of transmission over the internet is 100% secure. We cannot guarantee absolute security of your information.

8. Your Rights and Choices

Depending on your location, you may have the following rights:

  • Access: Request information about the personal data we hold about you
  • Correction: Request correction of inaccurate personal data
  • Deletion: Request deletion of your personal data
  • Portability: Request a copy of your data in a structured format
  • Objection: Object to certain processing of your personal data
  • Restriction: Request restriction of processing in certain circumstances

To exercise these rights, please contact us using the information provided below.

9. Data Retention

We retain personal information only for as long as necessary to fulfill the purposes outlined in this privacy policy, comply with legal obligations, resolve disputes, and enforce our agreements. Since calculation data is processed locally on your device, we do not retain any of your calculation information.

10. Children's Privacy

Our services are not directed to children under 13 years of age. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us.

11. International Data Transfers

Your information may be transferred to and processed in countries other than your own. We ensure appropriate safeguards are in place to protect your personal information in accordance with this privacy policy.

12. Changes to This Privacy Policy

We may update this privacy policy from time to time. When we make changes, we will:

  • Update the "Last updated" date at the top of this policy
  • Notify users of significant changes through our website or email
  • Provide a prominent notice on our homepage

Your continued use of our services after any changes indicates your acceptance of the updated privacy policy.

13. Contact Us

If you have any questions, concerns, or requests regarding this privacy policy or our privacy practices, please contact us:

Email: [email protected]

Contact Form: Available on our Contact page

Response Time: We typically respond within 48 hours

Privacy Highlights

  • Local Processing: All calculations performed on your device
  • No Data Collection: We never store your calculation inputs or results
  • Minimal Tracking: Only essential cookies and anonymous analytics
  • Your Rights: Full control over any personal information you share
  • Transparency: Clear information about how we protect your privacy