Today, if you want to make a full time income, it's not enough to simply have a job. You need at least 2 or 3 different sources of income to ensure that you are able to pay your entire bills in the event something unfortunate happens. Technology has evolved so much that in recent years lots of people have discovered another method to earn money: they develop mobile applications. Many entrepreneurs have made a term for themselves by developing mobile apps, Deniz Gueney and if you're interested in learning how to produce mobile apps yourself, keep looking over this article.

Mobile app development is really a rapidly growing industry because people are finding more approaches to earn money through their smartphones. Everyday the amount of active users keeps growing. Below are a few numbers that may illustrate just how large the is now:

- How many smartphone users worldwide is expected to attain 1 billion in 2014 ( source ).

- Based on statistics there have been nearly 35 million iPhone developers by December 2010 ( source ). This figure shows an increase of 25% over the last year's figures!

If you want to develop mobile apps then you'll need several things before you start. This is true of any type of development, nevertheless, you especially need the following:

- Skills and knowledge – You'll need to know how to code, and you'll also need to learn about design concepts like UX (User Experience) and HCI (Human Computer Interaction).

- A computer – Obviously! Ideally it should be a laptop/netbook that runs Windows or Mac OSX since most computers nowadays run one of these brilliant operating systems. However, if your skills are good enough then you could be able to produce a software on Linux as well.

- A smartphone – It's not required for developing apps, but it will definitely help since you can test them directly on your device. In the event that you don't have a smartphone then you might always work with a friend's or a household member's device.

- An IDE – A software development kit (or IDE - Integrated Development Environment) is necessary to produce applications for Android, iOS and Windows Phone platforms. Popular IDEs include Xcode , Eclipse and Visual Studio.

- The developer license – You are able to develop apps without paying anything, but when you intend to publish them on app stores then you'll need to pay for the annual fee that will be currently $99 for Apple App Store and Google Play Developer Console. Several payment methods are available, including charge cards, PayPal and wire transfer from your bank account.