Privacy Policy

Last updated: May 2026

What we collect

When you create an account, we collect your email address and store your saved projects and calculations. Calculator inputs and results are stored locally in your browser (localStorage) and optionally synced to your account if you are signed in.

Analytics

We use Vercel Analytics to collect anonymous usage data (page views, interactions). No personally identifiable information is included in analytics data.

Cookies and local storage

MaterialCalc uses browser localStorage to save your calculator settings, unit preferences and projects between sessions. We use authentication cookies (via Supabase) when you are signed in. No advertising or tracking cookies are used.

Third parties

We use Supabase for account authentication and data storage, and Vercel for hosting and analytics. We do not sell your data to third parties.

Contact

For privacy questions, contact us at the email address on our About page.

This privacy policy is a summary. A full policy will be published before commercial launch.