Your event data

Local by design.

The calculator processes entries in the browser. Save stores one event in this browser's local storage and reloads it when you return. A separate IndexedDB library can store named event copies. No business account is created and the app does not upload your event data.

Summaries and backups contain event names, product codes, quantities and costs. Full version-2 backups also contain itemized event costs and private reference notes. Ordinary summaries include only the expense total; separate cost breakdowns include labels and amounts, never private reference fields. Personal information entered in labels remains in those labels. History backups contain all saved copies and their private reference notes. Confirmed recovery from damaged history keeps the unreadable original separately in browser storage; it is not included in the new history backup. Clearing site data removes those recovery copies too. Selected history summaries include expense labels/amounts but exclude private references. Share exports only with intended recipients. Download a backup before clearing browser data; remove downloaded files separately if needed.

Cloudflare serves the website and receives normal connection information. Product code contains no advertising or analytics scripts. The restrictive content policy blocks external script loading.