Privacy Policy
Last updated: February 17, 2026
ProCalc.ai ("we", "us", "our") operates the procalc.ai website. This page informs you of our policies regarding the collection, use, and disclosure of personal information.
Information We Collect
Information You Provide
- Email address (when you subscribe to our newsletter or create a Pro account)
- Payment information (processed securely by Stripe — we never store card details)
Information Collected Automatically
- Usage data: pages visited, calculations performed, features used
- Device information: browser type, operating system, screen size
- IP address (used for rate limiting and approximate location)
- Cookies and similar technologies (see Cookie Policy below)
How We Use Your Information
- To provide and improve our calculator services
- To send you our weekly newsletter (if subscribed)
- To process payments for Pro accounts
- To display relevant advertisements
- To analyze site usage and improve performance
Third-Party Services
We use the following third-party services that may collect data:
- Google Analytics (GA4): Website traffic analysis
- Google AdSense / Raptive: Display advertising
- Stripe: Payment processing for Pro accounts and sponsorships
- Loops.so: Email newsletter delivery
- Supabase: Database and authentication services
- Vercel: Website hosting and delivery
Cookies
Essential Cookies
Required for the site to function: dark mode preference, unit preferences, calculation counter.
Analytics Cookies
Google Analytics cookies help us understand how visitors use the site.
Advertising Cookies
Google AdSense cookies enable personalized advertising.
You can manage cookie preferences using the cookie settings panel accessible from the banner at the bottom of any page.
Your Rights
- Access: Request a copy of your personal data
- Deletion: Request deletion of your account and data
- Opt-out: Unsubscribe from emails via the link in any email
- Cookie control: Manage preferences via cookie settings
Data Retention
- Account data: retained while your account is active
- Analytics data: retained for 26 months (Google Analytics default)
- Email data: retained until you unsubscribe
Children's Privacy
ProCalc.ai is not directed at children under 13. We do not knowingly collect information from children.
Changes to This Policy
We may update this policy from time to time. We will notify you of changes by posting the new policy on this page.
Contact
Questions about this privacy policy? Email us at hello@procalc.ai.