Today, if you intend to make an income, it's inadequate to simply have a job. You need at the very least 2 or 3 different sources of income to ensure that you are able to pay all of your bills in case something unfortunate happens. Technology has evolved so much that in the past few years many individuals have found another method 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 reading this article.

Mobile app development is really a rapidly growing industry because people are finding more ways to earn money through their smartphones. Everyday the number of active users keeps growing. Here are a few numbers that'll illustrate just how large the is becoming:

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

- Based on statistics there have been nearly 35 million iPhone developers as of December 2010 ( source ). This figure shows a rise of 25% over the previous year's figures!

If you wish to develop mobile apps then you'll need several things before you can start. This is true of any kind of development, however, you especially need the next:

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

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

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

- An IDE – A pc software development kit (or IDE - Integrated Development Environment) is important to generate applications for Android, iOS and Deniz Güney Entrepreneur 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 charge cards, PayPal and wire transfer from your bank account.