Privacy Policy

Calculator inputs

Every calculator on Renderlog Calc runs entirely in your browser using JavaScript. Numbers you type (weight, salary, date of birth, etc.) never leave your device. We do not log, store, cache, or transmit any of it to a server.

Analytics and cookies

We may use privacy-respecting analytics (e.g. Plausible, Fathom, or similar) to count aggregated page views. These tools do not set tracking cookies and do not identify you personally. We do not use Google Analytics or advertising trackers.

Third-party services

Our site is served over a CDN. The CDN may log your IP address and user agent for security purposes (DDoS mitigation, bot detection). This is standard for any website and is not linked to calculator usage.

Your rights

Because we don't collect personal data, there's nothing for us to delete, export, or share. You already have full control. If you'd like to confirm this, open your browser's network tab while using any calculator — you'll see zero outbound requests after the page loads.

Changes to this policy

If we ever change this policy, we'll update this page and bump the date below. Any future change will preserve the core commitment: calculator inputs stay on your device.

Last updated: April 2026.