This is the first thing I install on every Mac I use. Seriously, it's gotten to the point where I can't imagine using macOS without it.
Rectangle is a free, open-source app that supports macOS 10.13+ and both Intel and Apple Silicon. I'm always down for free and open-source, so that's a big thumbs up from me.
But what makes Rectangle a must-have for me is the convenience it brings. The shortcuts are a lifesaver, and you don't even have to memorize them all - just repeat them to cycle through window sizes.
For those who've used Spectacle Mac app, Rectangle is pretty much the same thing. When the app first runs, you can even choose the Spectacle default shortcuts.
If you're dealing with complex workflows, it might feel a bit basic. But in all fairness, as a free app, Rectangle packs a punch. I've never felt limited by it.
So, if you're a Mac user and haven't given Rectangle a whirl yet, I wholeheartedly recommend it. It's been a game-changer for me and I reckon it might be for you too.
Charmstone