SagaBookKeyFlip · Updated 18 October 2026
Your text stays yours.
How KeyFlip and its browser example handle information.
Text correction on Mac
With your macOS permission, KeyFlip reads a bounded piece of text near the cursor and verifies the active field before replacing a word. Layout conversion uses local rules and word sets; typo correction uses the macOS spelling service. KeyFlip does not send typed text to its own servers or save a typing history.
Settings and personal words
Appearance, correction preferences, excluded apps and words you explicitly add are stored on your Mac. Personal words can be removed in KeyFlip settings. Temporary checks and undo state stay in memory.
System permission and protected fields
Cross-app correction uses macOS Accessibility permission. Secure fields, secure keyboard input, unsupported input sources and excluded apps are skipped. You can turn correction off or revoke its permission in macOS settings.
Browser example
Text entered in the example is processed in the page and is not submitted to the site. A bounded undo/redo history is kept only in page memory and is cleared when the field is reset or the page is closed. The example does not ask for access to your other apps or keyboard. Opening the website still involves ordinary web requests to its hosting.
Apple services
The app contains StoreKit integration for planned subscriptions. Store product and transaction requests are handled through Apple; typed text is not part of those requests. The public release and real purchase setup are still in preparation.