Cornice App

Cornice is a free, open-source menu bar manager for macOS.

You place a divider in the menu bar by hand. Everything to its left hides when you click the chevron, and comes back when you click again. ?-drag the divider to set where the line falls, and Cornice never moves it afterwards.

Hiding and revealing require no permissions at all. Cornice resizes its own status item, which any application is allowed to do, so it does not request Accessibility at startup, or at all, unless you enable something that cannot work without it.

Features:

• Hide and reveal with one click
• Optional auto-hide once the pointer leaves the menu bar
• Configurable keyboard shortcuts for hiding and for auto-hide
• Adjustable divider thickness and height, five chevron styles
• Open at login
• 16 interface languages, switched without restarting

An optional window-gestures module, off by default, is the only part that asks for Accessibility. Swipe two fingers on a window's title bar to move it: left or right for halves, up to fill the screen, down to restore it. A second swipe straight after narrows to a third, then two thirds. Pinch in sends the window to the Dock.

Cornice deliberately does not rearrange other applications' menu bar icons, and offers no second menu bar, no per-icon hotkeys, no profiles and no menu bar styling. Placing the divider is a one-off you do by hand.

Requires macOS 26 (Tahoe) or later on Apple Silicon. The builds are signed for development and not notarised, so the first launch is right-click, Open, then Open again.