Show HN: SpinWin – A macOS menu bar app to visually rotate or spin any window
Summary
SpinWin is a macOS menu-bar utility that visually rotates or spins another application's window. Since macOS has no public API to rotate windows, SpinWin hides the target window off-screen, uses ScreenCaptureKit to capture it, and renders a rotating overlay using a CALayer transform. It requires Screen Recording and Accessibility permissions and has limitations such as a non-interactive overlay and potential Mission Control exposure; the project is open source with a MIT license and provides build instructions and source code.