Apple was founded in 1976 and its first products included early versions of a personal computer, which failed to achieve mass commercial success. In 2001, however, the company launched the iPod, a portable music device which marked the beginning of Apple’s ascent towards the top of the most successful tech companies in the world. In 2016, the brand value of the corporation reached 228 billion U.S. dollars, a ten-fold increase compared to seven years prior. The iPod sales , however, after peaking in 2008 at 55 million units sold worldwide, started to decrease slowly. By 2014, iPod sales accounted for only around one percent of Apple's total revenue. This was due largely to the launch of the iPhone and other smartphones, which incorporated music-playing features, thus making a separate music player redundant.
Apple’s most successful product is the iPhone, which at the time of its launch in 2007, was effectively the first mobile phone with a touch-screen interface. The first generation of the smartphone sold some 1.4 million units in its first year on the market. The company went on to sell more than 1 billion units between 2007 and 2016 worldwide. The breakdown of Apple’s revenue shows that the company today generates more than 60 percent of its revenue from iPhone sales.
Another lucrative Apple product, which was unveiled in 2010, is the iPad, the first commercially successful tablet computer. The device sold more than 3 million units in the first 3 months after it was released onto the market. As of 2016, the iPad accounts for about a quarter of global tablet sales. In its first fiscal quarter of 2017, Apple sold over 13 million units.