SpinWin – A macOS menu bar app to visually rotate or spin any window
SpinWin is an open source menu bar app to visually rotate any individual window. You can rotate / spin as many as you want one by one. I was scrolling reels when one came on where the content creator suggested "turning the phone upside down" for a portion. I was sitting at my mac, and decided to see if I could find something that did this. To my surprise, nothing exists, so I decided to build it. Turns out macOS doesn't provide any public API to do anything like this, so I wound up using the Accessibility API to move the target window offscreen, where it keeps rendering. Then we capture…
In plain words
SpinWin is an open source macOS menu bar app that visually rotates individual windows on demand. Built in Swift with an MIT license, it uses the Accessibility API to capture window contents and display them on a transparent overlay that can be rotated at any angle. The app was created to fill a gap in macOS functionality, allowing users to spin windows for viewing content in different orientations, similar to rotating a phone.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
SpinWin is an open source menu bar app to visually rotate any individual window. You can rotate / spin as many as you want one by one. I was scrolling reels when one came on where the content creator suggested "turning the phone upside down" for a portion. I was sitting at my mac, and decided to see if I could find something that did this. To my surprise, nothing exists, so I decided to build it. Turns out macOS doesn't provide any public API to do anything like this, so I wound up using the Accessibility API to move the target window offscreen, where it keeps rendering. Then we capture it's contents with ScreenCaptureKit, and display that on a transparent, borderless overlay window which has a CALayer to rotate it. It's written in Swift, open source, MIT license, and signed/notarized. Have fun - would love to hear your comments.
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