Built a little Mac app
Ali Shan
Built a little Mac app called Flip, and it somehow went viral on Twitter.
The idea is pretty simple. What if every window on your Mac had a back side where you could keep notes? So I built exactly that.
Flip any window, jot something down, flip back. Your notes stay attached to that window.
No extra apps to switch between.
Built natively for macOS, completely local, and free.
Check it out: https://flip.pylondev.com
Here’s the original tweet:
https://x.com/skimmycat20/status/2096580098506084400
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Posted Oct 17, 2026
Built a little Mac app called Flip, and it somehow went viral on Twitter. The idea is pretty simple. What if every window on your Mac had a back side where y...
