Today, if you intend to make a full time income, it's inadequate to simply have a job. You will need at the least 2 or 3 different sources of income to ensure you can pay your entire bills in case something unfortunate happens. Technology has evolved so much that in recent years lots of people are finding another way to earn money: they develop mobile applications. Many entrepreneurs have made a term for themselves by developing mobile apps, and if you're enthusiastic about learning how to develop mobile apps yourself, keep scanning this article.

Mobile app development is really a rapidly growing industry because people are finding more ways to earn money through their smartphones. Every day how many active users keeps growing. Here are some numbers that will illustrate just how big the has become:

- The amount of smartphone users worldwide is expected to achieve 1 billion in 2014 ( source ).

- According to statistics there were nearly 35 million iPhone developers as of December 2010 ( source ). This figure shows an increase of 25% over the previous year's figures!

If you want to develop mobile apps then you'll need several things before you start. This will also apply to almost any development, however you especially need these:

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

- Some type of computer – Of course! Ideally it should be a laptop/netbook that runs Windows or Mac OSX because most computers nowadays run one of these operating systems. However, if your skills are adequate then you may be able to develop an application on Linux as well.

- A smartphone – It's not required for developing apps, nonetheless it will surely help since you can test them entirely on your device. In the event that 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 generate applications for Android, iOS and Windows Phone platforms. Popular IDEs include Xcode , Eclipse and Deniz Guney Visual Studio.

- The developer license – You can develop apps without paying anything, but if you want to publish them on app stores then you'll need to pay for the annual fee that is 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 own bank account.