Ever since its first appearance, the simple iPod caused many heartbreakes and indeed revolutionized the market of an unknown product before. Thus, the Apple company in front with Mr Steve Jobs considered releasing similar versions of the iPod classic in the following years. From the iPod classic to the Shuffle, Nano and the recent released iPod Touch, all versions were big hits and despite the pretty high costs, they were all a must-have for everyone, starting with celebrities, kids and even mature people or business persons. And because the best product doesn't always come from the first place, each product of he iPod line had several versions, with improved qualities and features in order to best suit everyone's needs. So, as with many other digital music players, iPods can have different storage capacities, varying from the cheapest 512 MB iPod shuffle version, up to 64GB for the latest version of the iPod Touch.

Since October 2004, the iPod whole line of products has dominated the entire market of digital music players, making the item the best sold product from Apple company and also one of the most profitable products sold worldwide, ever. On a market with several competitors, still the biggest slice of the pie is kept by the iPods industry, making it hard for competitors to come up with better or, at least, more appealing products that will take over the market.

But even though analysts were talking about a boom that the iPods selling had during the 2004 and 2005 years, by far the most profitable years for the whole company' sales were the 2008 and 2009. In years grinned by the economical crisis, it appears that people have most lost their faith in what iPod devices stand for, and consumers kept on buying the latest released on the market versions of the iPod touch, the third generation. As for the first trimester of 2010, reports suggested that the iPod line has reached 250 million units sold worldwide and the latest reports including the April month have outlined that the total sales jumped over the figure of 260 millions, making it the most profitable device ever sold. It seems that with such huge figures, the Apple developers have no thought in stopping the releasing of newer versions, such that the forth version of the iPod touch is wanted from fans all over the world.