Here you can find the source of isFree(Context context)
public static boolean isFree(Context context)
//package com.java2s; import android.content.Context; public class Main { public static boolean isFree(Context context) { return context.getApplicationContext().getPackageName() .equals("com.pedroedrasousa.wobblybubbleslite"); }/*from w ww.j a va 2 s.c o m*/ }