According to new data from comScore, Apple's iOS has twice the installed user base of Android in the US. iOS, which encompasses the iPhone, iPad, and iPod Touch, has an installed base of 37.9 million, 59 percent higher than Android's at 23.8 million. This data is according to comScore's MobiLens service, and includes phones and connected media devices like tablets.
As far as iOS installation goes, there are just slightly more iPhone users than iPod touch users. Both devices have about twice the users of the iPad. This gives Apple a 16.2% share of mobile subscribers, vs. Android's 10.2 percent. iPad ownership is highest for those ages 25 to 34, and only about 25% of those who own an iPad also own an iPhone. 17.5% of iPad owners have a BlackBerry, and 14.2% have an Android phone.
According to comScore Senior Vice President of Mobile, Mark Donovan, "[The] data clearly illustrate the Apple ecosystem extends far beyond the iPhone. Though it's frequently assumed that the Apple user base is composed of dedicated Apple 'fanboys,' there's not a tremendous amount of overlapping mobile device access among these users. This of course has significant implications for the developer community as they consider the market potential in developing applications for different mobile platforms."
This data may change as more Android tablets hit the market, giving Android a higher percentage on "mobile devices" and not just phones. Needless to say, Apple had a significant head start with the iPad, one which tablet makers are struggling to overcome.