Its a good day for stats. First, Apple has revealed that more than 3 billion apps have now been downloaded from its App Store by iPhone and iPod touch users worldwide in less than 18 months since its launch.
Three billion applications downloaded in less than 18 months – this is like nothing weve ever seen before, says Apple CEO, Steve Jobs. The revolutionary App Store offers iPhone and iPod touch users an experience unlike anything else available on other mobile devices, and we see no signs of the competition catching up anytime soon.
Theres more good news for Apple with the release of stats from AdMob that show that iPod Touch usage more than doubled in the UK on Friday 26 December, as users got to grips with their new gadgets. But the AdMob stats also reveal rapid growth in worldwide requests from Android devices, with the Motorola Droid is now the leading Android handset. Key findings from AdMob research include:

• iPod touch daily unique users grew by 124% in the UK on 26 December, compared to average daily unique users of the week before Christmas.
• Worldwide iPod touch daily unique users grew by 57% on 26 December, compared to average daily unique users of the week before Christmas.
• Ad requests from iPod touch handsets increased 96% on 26 December, compared to the daily average from the week prior.
• Ad requests from iPhone handsets increased by 12%  over the same period.
• Worldwide requests from Android devices increased 97% from October to December.
• AdMob received over 1 billion ad requests from Android devices in December 09.
• The Motorola Droid is already the leading Android handset in the AdMob network, generating 30% of requests in December.
• In October, 98% of Android requests came from HTC devices. In December, 56% of requests were from HTC devices, 39% from Motorola devices, and 5% from Samsung.
• The US leads Android adoption. 90% of Android traffic was in the US in December, up from 84% in October.