Application kit is a framework that contains all the objects and details needed to implement the GRAPHICAL and event-driven user interface. It also MANAGES all the INFORMATION as it draws on the screen efficiently, communicates with hardware devices and clear areas of the screen before DRAWING. You can choose at which LEVEL you want to use the application kit. Create connections from user interface objects to application objects with the help of interface builder. Control the user interface programmatically and implement your own objects sub classing NSView.

Application kit is a framework that contains all the objects and details needed to implement the graphical and event-driven user interface. It also manages all the information as it draws on the screen efficiently, communicates with hardware devices and clear areas of the screen before drawing. You can choose at which level you want to use the application kit. Create connections from user interface objects to application objects with the help of interface builder. Control the user interface programmatically and implement your own objects sub classing NSView.