Apple iOS is the fastest growing mobile operating system in 2013, with iPhone users growing from 14 percent of worldwide market share in the first quarter of 2013 to 19 percent in Q3, according to GlobalWebIndex.
The research, based on 89 percent of the global Internet population, found the number of iPhone users is expected to grow to 233 million this year, with iPads users estimated at 165.72 million.
iOS may be the fastest growing mobile operating system, but Android is still dominating the market, with a 57 percent share. GlobalWebIndex estimates Android users will total 708 million this year.
The research firm also predicts Android will be the world's number one mobile operating system by early 2015.
Windows Phone users are estimated to total 68.26 million this year, surpassing BlackBerry at 62.56 million.
Turning to PCs, the research firm found that the Windows 7 operating system takes the lead at an estimated 734.12 million users this year. Windows 8 users come under at 168.11 million, according to the count by GlobalWebIndex.
Apple products are also seeing gains in this area. There will be an estimated 47.78 million Apple Mac users this year, the research firm said.
This story, "iOS called fastest-growing mobile OS, but Android rules" was originally published by Computerworld Australia.