Privacy Policy

Introduction

This Privacy Policy explains how Concrete Calculator Hub collects, uses, and protects information when you use our public calculators, account features, saved projects, paid PDF exports, contact forms, analytics, ads, and affiliate integrations.

Information We Collect

We may collect the following types of information:

• Account information: Name, email address, login provider, account identifiers, and session data.
• Saved project data: Calculator type, project title, calculator inputs, calculator results, notes, and timestamps.
• Payment data: Customer identifiers, subscription or purchase status, price identifiers, checkout session identifiers, and billing status from the payment provider. We do not store full card numbers.
• Usage and device data: Pages visited, events, browser, device, approximate location, IP address, referrers, and similar diagnostic data.
• Contact information: Name, email, and message content you send through contact forms or support channels.

How We Use Information

We use information to:

• Provide public calculators and account features
• Save, list, delete, and export your projects
• Verify paid access for PDF exports
• Process payments and support billing
• Improve calculator accuracy, site performance, and user experience
• Monitor abuse, fraud, security, and technical issues
• Measure traffic through Google Analytics, Plausible, Umami, Microsoft Clarity, or similar configured tools
• Operate ads and affiliate links when configured

Third-Party Services

Depending on site configuration, we may use services such as Better Auth, Google OAuth, Cloudflare, Stripe, Creem, Google Analytics, Google Search Console, Google AdSense, Microsoft Clarity, Plausible, Umami, Affonso, PromoteKit, Resend, Cloudflare Email, or other infrastructure and support providers. These providers may process data according to their own policies.

Data Storage

Saved projects and account records are stored in the site's database. Payment status records are stored so paid features can be unlocked. Public calculator usage does not require login, but analytics, advertising, and affiliate tools may still collect usage data if configured.

Data Security

We use reasonable technical and organizational measures to protect your information. No internet service can be guaranteed to be completely secure.

Data Retention

We keep account, saved project, and payment records as long as needed to provide the service, comply with legal obligations, resolve disputes, and enforce agreements. You may contact us to request account or data assistance.

Children's Privacy

The site is not intended for children under 13. We do not knowingly collect personal information from children under 13.

Changes to This Policy

We may update this policy by posting a new version on this page.

Contact Us

If you have any questions about this Privacy Policy, please contact customer support at support@concreteestimatorhub.com.