I use Magnet daily and can't live without it. Makes window management much better on macOS. It's a shame macOS doesn't come with comparable window management solution to Windows's by default.
I resisted a window organizer for years. I finally bit the bullet and tried Magnet, and I've never looked back.
First thing I install on my mac, without even looking at if the system has something similar.
I love this product - the *only* thing I liked about Windows was the ability to snap my windows in to place on my desktop. Magnet adds the one feature I wanted for my Mac from Windows and super-sizes it - especially with multiple monitor support.