Privacy Policy

1. Introduction

Welcome to CNC Optimization ("we," "our," or "the website"). This Privacy Policy explains how this website collects, uses, and protects your information when you use our free CNC calculators and tools.

Who We Are: This is an independent project created by a solo developer. We are committed to transparency and protecting your privacy.

2. Information We Collect

2.1 Calculator Input Data (Local Only)

All calculator inputs (costs, production parameters, equipment specifications) are processed client-side in your browser. This data is:

• ✅ Stored locally in your browser (localStorage)
• ✅ Never sent to our servers
• ✅ Completely under your control (clear browser data to remove)

2.2 Feedback Submissions (Optional)

If you submit feedback using the feedback button, we collect:

• Your email address (optional - only if you provide it)
• Feedback message content
• Page URL and timestamp

Purpose: To respond to your feedback and improve the calculators.

2.3 Usage Analytics (Anonymized)

We use analytics to understand how people use the website (if you consent via cookie banner):

• Pages visited and time spent
• Device type and browser (anonymized)
• Approximate location (country/region level only)
• Referral source

Analytics Provider: Google Analytics with IP anonymization enabled.

2.4 Cookies and Local Storage

We use the following types of cookies:

• Necessary Cookies: Required for the website to function (remember your calculator settings, cookie consent choice). These cannot be disabled.
• Analytics Cookies: Understand usage patterns (Google Analytics). You can opt-out via the cookie banner.
• Functional Cookies: Remember your preferences across sessions. You can opt-out.

3. How We Use Your Information

We use collected information to:

• Provide and maintain the calculator services
• Improve calculator accuracy and add new features
• Respond to your feedback and questions
• Analyze usage patterns (anonymized) to enhance user experience
• Detect and prevent technical issues

We do NOT:

• ❌ Sell your personal information
• ❌ Share your data with third parties (except anonymized analytics)
• ❌ Send unsolicited emails or marketing
• ❌ Store your sensitive calculator inputs on servers

4. Third-Party Services

This website uses the following third-party services:

• Google Analytics: Anonymized usage tracking. Google may use cookies per their Privacy Policy.

We do not control third-party cookies. Please review their privacy policies.

5. Data Security

We implement security measures to protect your information:

• HTTPS encryption for all data transmission
• Calculator inputs stored locally in your browser (not on servers)
• Minimal data collection principle

However, no method of transmission over the Internet is 100% secure. Please be cautious when sharing sensitive information.

6. Your Privacy Rights

6.1 General Rights

• Access: Request what personal data we have about you
• Correction: Request correction of inaccurate data
• Deletion: Request deletion of your personal data
• Opt-Out: Disable analytics cookies via the cookie banner

6.2 GDPR Rights (European Union Users)

If you are in the EU, you have additional rights under GDPR:

• Right to access your personal data
• Right to rectification (correction)
• Right to erasure ("right to be forgotten")
• Right to restrict processing
• Right to data portability
• Right to object to processing
• Right to withdraw consent at any time

Legal Basis for Processing: Consent (cookie banner) and legitimate interest (improve services).

6.3 CCPA Rights (California Users)

If you are a California resident, you have rights under the California Consumer Privacy Act (CCPA):

• Right to know what personal information is collected
• Right to know if personal information is sold or disclosed
• Right to opt-out of the sale of personal information (we do not sell data)
• Right to deletion of personal information
• Right to non-discrimination for exercising CCPA rights

6.4 How to Exercise Your Rights

To exercise any of these rights, contact us at: support@cncoptimization.com

7. Data Retention

• Calculator Data: Stored locally in your browser until you clear browser data
• Feedback Submissions: Retained for 2 years or until you request deletion
• Analytics Data: Anonymized and retained per Google Analytics settings (26 months)

8. Children's Privacy

This website is not intended for individuals under 16. We do not knowingly collect personal information from children. If you believe a child has provided personal information, please contact us for deletion.

9. International Data Transfers

This website is hosted on servers in the United States. By using the website, you consent to the transfer of your information to the U.S., which may have different data protection laws than your country.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated "Last Updated" date. Significant changes will be highlighted via a notice on the homepage.

11. Contact Us

If you have questions, concerns, or requests regarding this Privacy Policy: