Privacy Policy

Last Updated: June 2026

1. Introduction

Welcome to CostFlowAI. We respect your privacy and are committed to protecting your personal information. This Privacy Policy explains how we collect, use, and protect your data when you use our construction cost estimation calculators.

2. Information We Collect

2.1 Information You Provide

When you use our services, you may provide:

  • Project dimensions and specifications you enter into calculators
  • Email address (if you choose to receive estimates or subscribe to updates)
  • Contact information submitted through our contact form
  • Payment information (processed securely by Stripe — we do not store credit card numbers)

2.2 Automatically Collected Information

We automatically collect certain information when you visit our website:

  • Browser type and version
  • Operating system
  • IP address (anonymized)
  • Pages visited and time spent
  • Calculator usage patterns (anonymized)
  • Product usage events (anonymized, via PostHog — which calculators you use, export actions, feature interactions)

3. How We Use Your Information

We use collected information to:

  • Provide and improve our calculation services
  • Send requested estimates or reports
  • Respond to your inquiries
  • Analyze usage patterns to improve our calculators
  • Ensure website security and prevent fraud

4. Cookies and Tracking

We use cookies and similar tracking technologies to improve your experience. Cookies help us:

  • Remember your calculator preferences
  • Track calculator usage (anonymously)
  • Analyze website traffic with Google Analytics

You can control cookies through your browser settings. Disabling cookies may limit some website functionality.

Your analytics-consent choice depends on your region. If you visit from the European Economic Area, the United Kingdom, Switzerland, or California, analytics stay off until you explicitly accept them via our cookie banner (opt-in). Visitors from other regions see a notice that analytics are on by default and may opt out at any time via the same banner (opt-out). If we cannot determine your region, we default to opt-in. Either way, your choice is remembered and we do not re-prompt you.

4.1 Google Analytics

We use Google Analytics (GA4) to understand how visitors use our site. Google Analytics uses cookies to collect information about your use of our website, including:

  • Pages you visit and time spent on each page
  • Which calculators you use and how often
  • Your device type, browser, and screen resolution
  • Your approximate geographic location (city/region level)

Important: We have configured Google Analytics with IP anonymization enabled, which means your full IP address is never stored. We do not collect personally identifiable information through Google Analytics.

Opt-Out: You can opt out of Google Analytics tracking by:

For more information about how Google uses data, visit Google's Privacy Policy.

4.2 PostHog Analytics

We use PostHog for product analytics to understand how users interact with our calculators and features. PostHog is configured with memory-only persistence, meaning it does not store cookies on your device. Data collected includes page views, calculator usage, and feature interactions. No personally identifiable information is captured through PostHog.

4.3 Resend (Email)

When you provide your email address to receive estimates or updates, we use Resend as our email delivery service. Resend processes your email address solely to deliver the messages you requested. You can unsubscribe from any email at any time using the unsubscribe link in the email footer.

4.4 Affiliate Links

CostFlowAI contains affiliate ("paid") links. When you click certain links and make a purchase, we may earn a commission at no additional cost to you. Affiliate partners and networks (which may include Amazon Associates; the Impact network and retailers we reach through it, such as Ohio Power Tool and Greenworks; and other retailer programs and networks such as Sovrn Commerce and FlexOffers) may set cookies or append tracking parameters (for example, a unique click identifier) when you click an affiliate link. These are used by the retailer or network to attribute a qualifying purchase to us, and typically persist for a limited attribution window set by that partner. These commissions never change the price you pay and never affect our estimates or recommendations. For full details, see our Affiliate Disclosure.

4.5 Lead Forms and Consent Certification

We use consent certification on our lead forms through TrustedForm (a service of ActiveProspect). When you choose to request contractor quotes, TrustedForm records your interaction with the form — such as the page you visited, form fields, and the time you submitted — to generate an independent consent certificate, and we may share that certificate with the contractor partners you ask us to connect you with, as proof that you requested to be contacted. This applies only to our lead-capture forms, never to the calculators themselves.

5. Data Sharing and Disclosure

We do NOT sell your personal information. We may share data only in these limited circumstances:

  • Service Providers: We use third-party services to operate CostFlowAI:
    • Google Analytics (traffic analysis, IP anonymization enabled)
    • PostHog (product analytics, no cookies, memory-only persistence)
    • Stripe (payment processing — see Stripe's privacy policy at stripe.com/privacy)
    • Resend (email delivery)
    • Anthropic (AI Budget Assistant — conversations are not stored)
    • Netlify (hosting)
    • Sanity (blog content management)
    • Affiliate networks (e.g., Sovrn Commerce, Impact, FlexOffers) — via cookies/parameters, to attribute qualifying purchases; see our Affiliate Disclosure
    • ActiveProspect / TrustedForm (consent certification on lead forms — generates the proof-of-consent certificate shared with contractor partners when you request quotes)
  • Legal Requirements: When required by law or to protect our rights
  • Business Transfers: In the event of a merger or acquisition

6. Data Security

We implement appropriate technical and organizational measures to protect your personal information. However, no internet transmission is 100% secure. We cannot guarantee absolute security.

7. Your Rights

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

  • Access: Request a copy of your personal data
  • Correction: Request correction of inaccurate data
  • Deletion: Request deletion of your personal data
  • Opt-Out: Unsubscribe from marketing emails at any time

To exercise these rights, contact us at costflowai@gmail.com

8. Children's Privacy

Our services are not directed to individuals under 18 years of age. We do not knowingly collect personal information from children.

9. International Users

CostFlowAI operates from the United States. If you are accessing our services from outside the U.S., please be aware that your information may be transferred to and processed in the United States.

10. California Privacy Rights (CCPA)

If you are a California resident, you have the right to: request disclosure of the categories and specific pieces of personal information we collect; request deletion of your personal information; opt out of the sale of personal information (we do not sell personal information). To exercise these rights, contact costflowai@gmail.com. We will respond within 45 days.

11. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of significant changes by posting the new policy on this page with an updated "Last Updated" date.

12. Contact Us

If you have questions about this Privacy Policy, please contact us:

Email: costflowai@gmail.com