Today, if you intend to make a living, it's not enough to simply have a job. You need at least 2 or 3 different sources of income to make sure that you are able to pay all of your bills just in case something unfortunate happens. Technology has evolved so much that in the past few years many people have found another solution to earn money: they develop mobile applications. Many entrepreneurs have made a name for themselves by developing mobile apps, and if you're thinking about learning how to produce mobile apps yourself, Deniz Güney Entrepreneur keep reading this article.

Mobile app development is a rapidly growing industry because folks are finding more approaches to earn money through their smartphones. Each day how many active users keeps growing. Below are a few numbers that may illustrate just how large the has become:

- The number of 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 can start. This will also apply to almost any development, nevertheless, you especially need the following:

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

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

- A smartphone – It's not required for developing apps, nonetheless it will definitely help because you can test them on your device. If you don't have a smartphone then you might always use a friend's or a family member's device.

- An IDE – A software development kit (or IDE - Integrated Development Environment) is important 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 if you want to publish them on app stores then you'll need to cover the annual fee which will be currently $99 for Apple App Store and Google Play Developer Console. Several payment methods are available, including bank cards, PayPal and wire transfer from your bank account.