The easiest way to quit an application is when you are done using it, don't close the window, press the CMD + Q keys and the app will quit, however when you relaunch the app you will get the window you were last in, to prevent this, close the window and then press CMD + Q.
Is there a way to automatically quit apps on Mac?
The fastest way to quit an app from anywhere without taking your hands off the keyboard is to use the ⌘ + Q shortcut, which will completely quit any active app. Learning to use ⌘ + Q on any app you don't want open will be a significant productivity boost to your daily workflow.
What is the fastest way to close apps on Mac?
To quit an app, choose App Name > Quit App in the menu bar. For example, choose Preview > Quit Preview (or press the keyboard shortcut Command-Q).