Your log stays on your device.

Selected file contents and filenames are read by browser code and a local Web Worker. This application does not upload them, send callsigns or results to a server, or put private data in page URLs.

What the application stores

The active comparison and field choices live in browser memory. The app uses no account, application cookies, local storage, IndexedDB, analytics or advertising scripts. Reset clears the active comparison and terminates its worker. Closing or reloading the page discards the session. Files you download remain wherever your browser saves them.

What still reaches hosting

Opening the website requests static pages, scripts, styles and bundled fonts from its host. The hosting provider may receive ordinary request metadata, including IP address, requested path and user agent. That is distinct from the selected log contents. Provider log retention depends on the eventual hosting configuration; it has not been independently audited here.

Downloads can contain private records

The ADI export contains your retained contacts. The manifest contains source filenames, headers, source-record mappings, explicit decisions and original values for merged contacts. Treat both downloads as private log material. Sharing a manifest can reveal callsigns, station information and comments.

Your browser and links

Extensions, shared-device access, browser downloads, operating-system sync and the source logger are outside this app's control. Source links lead to external sites only when you follow them. Read practical private-review steps for handling a sensitive log.

Production hosting

These pages are hosted through ChatGPT Sites on Cloudflare. Hosting may set security cookies such as __cf_bm and process ordinary request metadata to protect and deliver the website. These hosting functions are separate from the application and do not receive the files or worksheet inputs processed locally. Hosting notice reviewed November 1, 2026.