Did you know that you can also make money with mobile applications? Once you've been released from the clutches of "Angry Birds" and once you've developed type 2 diabetes from "Candy Crush", you might start thinking about using apps as a source of income and not just for fun, so that you get a euro sign at the end of the result . Sometimes it will be enough to give an opinion, sometimes you will have to shed some sweat. Which is a small thing when you consider what some people are willing to do for money.