When comparing Cinch vs Sticker, the Slant community recommends Sticker for most people. In the question“What is the best window manager for Mac?” Sticker is ranked 19th while Cinch is ranked 36th. The most important reason people chose Sticker is:
Drag a window to a part of the screen and tell it to fill an area. It's as simple as that.
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Pros
Pro Free and paid versions
There are both versions of Cinch available, though the free version can be naggy.
Pro Simple and easy to use
So simple, even my grandma can use it
Pro Highly intuitive
Drag a window to a part of the screen and tell it to fill an area. It's as simple as that.
Pro Detects other windows
Sticker can detect edges of other windows so you can choose to stick your window to a part of a screen without overlapping others (or not).
Cons
Con Does not support the border of multiple displays well
When using multiple displays, the ability to dock a window to half of a display only works on one side of the screen divide. It can work (with some very careful cursor placement) only on the external monitor and not dividing edge of the native (laptop) monitor. It does not support quarter-splits either.
Bottom line, this was a great initial app, adding this capability before anyone else did, but it has been eclipsed by newer apps.