Your data stays in your browser. Parsing, regression, smoothing, forecasting, and anomaly detection all run client-side inside a WebAssembly module bundled with the page. Numeric series are never sent to the Secutils.dev server. State that needs to survive a reload (or be shared) lives in the URL fragment (#…), which browsers never transmit.
Anonymous usage analytics. We use Plausible Analytics, a privacy-first, GDPR-compliant tool, to collect aggregate usage data. No cookies, no personal data, no individual tracking.
See the full Secutils.dev privacy policy for details on the wider service.