With that in mind, enter Quitter a new (free) Mac app from Marco Arment that does one simple thing but does it well.
Of course you can achieve similar results with Windows and android, and you can also make your apple devices over complicated and very distracting, but in my experience more developers are trying to create simple interfaces for Apple devices and help handle distractions. One of the aspects that attracted me to the Mac and Apple products in particular was the way they dealt with notifications and encouraged an simpler interface with fewer distractions.