Android has a much lower number of mobile apps that the Apple's iTunes Apps Store. However, the Android Marketplace is growing steadily. It is now considered the fastest growing mobile apps stores.
AndroidLib.com reports that around 9,331 new mobile apps were added to the Android Market in March 2010. This is the biggest number of apps added to the Android App store for a given month, since it launched. In December 2009 the number of new apps added was around 3,800. Then in January 2010, these number increased to 5,500.
In early April 2010 the number of apps in the Android Market was 27,243 as compared to 160,000 in the the iTunes Apps Store. The Android Market still has a long way to go before it competes aggressively with the iTunes App Store.
With the launch of the iPad, third party developers may shift to making iPad apps instead of iPhone apps. This will reduce the number of new iPhone apps that will be developed overall.
The Android Market will definitely continue to grow. More Android phones are on the horizon and the Android Market will eventually become a viable competitor to the iPhone. SmartAirMedia is watching Android growth carefully and views Android as the next big competitor to Apple's iPhone and iPad. I am sure a Tablet is under development to compete head-to-head with the iPad.