Foldy Makes a MacBook Lid Look Like a Folding Phone

Field notes

Foldy uses the MacBook’s hinge-angle sensor and ScreenCaptureKit to capture the desktop, then renders the effect in a Metal-powered click-through window. The page lists seven treatments, including Frosted, Liquid, Rain, Ice, and Smoke, with effect strength adjustable from 0 to 100 percent. It targets Apple silicon MacBooks running macOS 14 Sonoma or later, with a wallpaper-only fallback when Screen Recording permission is unavailable.