How many cell phone apps are there in the world?

As at late January 2011 there were more than 700,000 apps across iphones, Android, Windows, Nokia, Blackberry and other smaller platforms. There has been more than 14 billion downloads of apps.

For a summary of the app market and smart phone growth read the 'smart phone apps to explode in 2011' article in related links. To get the current number of apps, check the Wikipedia link in related links.