LingoTweaker does not collect, transmit or share any personal data.

• All proofreading runs locally. The engine and its language data are bundled
  with the extension and execute on your device.
• The extension makes no network requests while checking text; it talks to no
  servers and contains no analytics or telemetry.
• Your settings (enabled sites, language choices, personal dictionary, ignored
  rules) are stored only in the browser's local extension storage and never
  leave your device.
• The only host permissions are used to run the checker on web pages you visit;
  text is processed in memory for display of underlines and suggestions and is
  never persisted or sent anywhere.