With smartphones gaining popularity, the demand for their applications,
or apps as they are popularly known, has also shot up. There are over 3
million apps for the iPhone and over a million apps in Google's Android
market. Most of these are selling like hot cakes. Developing and selling
your own smartphone app is becoming a lucrative way to make money on
the Internet. Apps cost virtually nothing to develop and entail no
storage or shipping costs. So they enjoy the best profit margins
