Last time, I remembered that web developers are now in very high demand in every company and earn so much bucks just to make websites and debugging databases depending on the situation. Starting a business on mobile game apps and earning money on this is extremely critical or risky as most of the earning is extremely small unless this app is as big as Angry Birds or Flappy Bird. What about normal mobile apps, especially super simple, such as Instagram or some extremely weird apps such as "bottle spinner sim"? Does it earn even more bucks or is it by popular demand? And also, all mobile apps using either ads as source of income revenue or in app power-up purchases or both. Others just making a method for income by making this app as "pay per download." The question is if which mobile app business can make more bucks: gaming apps or normal apps? Any tips for earning extra income while I'm working at my current office?