As on Apple’s iOS, apps listed in the Mac App Store must run in a restricted sandbox environment.
The main reason many apps aren’t available on the Mac App Store is the “sandboxing” requirement.
#My mac desktop icons are tiny on restart how to
How to Adjust the Icon Grid Count of Launchpad in Mac OS X How do I change my Launchpad icon on Mac? There is also a key on your keyboard devoted to the Launchpad. If it is not on your dock, open it and right-click on the icon and select “Keep in Dock” from the Options pop-up menu. Launchpad is that rocket icon either on your dock or buried in your Applications folder.