Attention Budget for YouTube stores settings and attention history locally in the browser extension's storage.

• enabled budgets and limits;
• strict-mode PIN hash, salt, and expiry;
• explicitly whitelisted video identifiers and titles;
• admitted video identifiers, titles, thumbnails, timestamps, and approximate watched seconds.

• No account is created.
• No analytics or telemetry is collected.
• No data is sent to the developer or another server.
• YouTube thumbnail images are loaded directly from i.ytimg.com when local history is displayed.
• Regular and private windows share extension storage when the user grants private-window access.

Removing the extension also removes its local data unless the browser preserves extension storage for later reinstallation.