The first iPhone went on sale 16 months before the first Android phone, so iOS had a head start--but according to these numbers, the handful of models that Apple has released to date have still managed to outsell hundreds of Android-based gadgets.
New devices sold daily. I don 't believe either Apple or Google has released information on this recently. But as of the second calendar quarter of 2011, Apple was selling around 367,000 iOS devices a day. And in June, Android honcho Andy Rubin said a half-million Android devices were being activated each day. Both figures are presumably significantly different now.
Total smartphone ownership. Comscore says that as of August, 43.7 percent of U.S. smartphone subscribers had an Android device; 27.7 percent had an iPhone. These figures don 't include tablets (a category which the iPad utterly dominates) and smartphone-like media devices (a category in which the iPod Touch has almost no competition whatsoever).
Tablet sales. Research firm Strategy Analytics reported last month that the iPad had 66.6 percent of the tablet market and Android tablets had grown to 26.9 percent. But as Kevin C. Tofel of GigaOM noted, that mixes iPads that Apple has sold with Android tablets that have shipped from the manufacturer but may or may not have been bought by a consumer. If any of those Androids are sitting on store shelves, they shouldn 't be compared against iPads that people have paid for and taken home.
Web usage. In August, according to Comscore, iOS devices accounted for 58.5 percent of all U.S. non-computer browser page views.