Your reading is none of our business.

FluentOS collects no data. There is no account, no sign-in, no analytics, and no tracking of any kind. We do not know who you are, what you look up, or how you use the app.

Translation happens on your Mac. FluentOS uses Apple's on-device Translation framework. The text you look up is processed locally and is never sent to us or to any third party. Language models are downloaded once from Apple when you choose your target language.

Your flashcards stay local. Your review deck, lookup history, and usage statistics are stored as files in your Mac's Application Support folder. They never leave your machine unless you export them yourself.

Permissions are used only at the moment of lookup. Accessibility permission lets FluentOS read the word under your cursor when you press the hotkey. Screen Recording permission (optional) enables the OCR fallback for apps that don't expose their text. Neither is used for anything else; nothing is recorded, captured in the background, or stored beyond the lookup itself.

Purchases are handled by Apple. Premium upgrades go through Apple's in-app purchase system. We receive no payment details and no personal information about you.

The only network requests the app makes are Apple's one-time translation-model downloads and periodic checks against our update server to see whether a new version is available. Update checks send no personal information.

Questions? Email support@fluentosapp.com.