
From: http://www.businessinsider.com/chart-of-the-day-iphone-os-devices-share-2010-2



North America Handsets

U.S. Handsets



From: http://metrics.admob.com/2010/01/december-2009-mobile-metrics-report/ full report at http://metrics.admob.com/wp-content/uploads/2010/01/AdMob-Mobile-Metrics-Dec-09.pdf
Highlights from the November 2009 AdMob Mobile Metrics Report include:
More than 3 billion apps have been downloaded from the app store, 9 months after they hit the 1 billion milestone and 3 months after hitting the 2 billion milestone.
At the time that 2 billion were downloaded, the app store had 85,000 app, but in November 2009, they hit 100,000.
From: http://247wallst.com/2010/01/13/apple-app-store-has-lost-450-million-to-piracy/
Mobile analytics firm Flurry is predicting that by the end of 2010, there could be upwards of 150,000 Android applications. They are expecting 300,000 for Apple.