Your data stays in your browser.

Catalyst v1 is a static, client-side-only tool. When you upload a CSV or save manual entries, the data is processed in your browser and is not sent to a server.

There are no accounts, logins, server databases, analytics trackers, or tracking cookies in v1. Manual log entries are stored only in this browser's local storage unless you clear them.

Catalyst does not use ad tracking, ad personalization cookies, or third-party advertising scripts. The site is designed to stay private and browser-only.

Because the app has no backend in v1, Catalyst cannot see, recover, or delete your local files or browser-local data for you.