How can i save numbers on game exit?

[Void_Frost]

I have made a simple clicker game in unity using C#. I would like to know if there is an easy way to save numbers, (examples:Cash,Cash Per Second)

[PersianKiller]

you can use playerPrefs.this is very simple and easy. for example this code will save how many times you pressed K button.

         public int counter;
            void Start(){

                        counter=PlayerPrefs.GetInt("COUNTER");
         }
                         void Update(){

	if (Input.GetKeyDown (KeyCode.K)) {

		counter++;
                       PlayerPrefs.SetInt("COUNTER",counter);

	}
                   }

so every time that you push k it will save it in your registry I guess it also works on android platform.