Website privacy

Short version: this website collects no personal information.

Analytics

We use Cloudflare Web Analytics, a privacy-first, cookie-free measurement tool. It reports aggregate numbers (page views, country, referrer) and does not identify or track individual visitors. No advertising trackers, no fingerprinting, no cookies requiring consent.

The on-page tools

The on-screen PD ruler runs entirely in your browser. Your calibration value is stored locally on your device (localStorage) and never sent to us.

The PDgo app

The iOS app has its own privacy policy, available at lumaseq.com/privacy and on its App Store page. In short: measurements are computed on your device and camera frames are never uploaded.