About 650 thousand in the end of 2012.
Apple's app store has over 250,000 apps. (See links below)
At the end of October 2010, there were more than 300,000 apps officially available in the App Store. See the link below for more information on the app store including a nice table of how many apps were in the app store at given dates
If you are meaning how many apps you can run with the app store up the answer is as many as you want/have. However if you mean how many apps you can run inside the store the answer is none because there is no trials in the app store just screen shots.
When you go to the app store, there are many apps that are free. The app store has a list of highest rated/most often bought free apps.
There is about or exactly 100,000!!
There should be no reason to get free apps illegally. The App Store does not allow you to get an app illegally.
There are many apps for this. App store, iTunes, Apple Books, so on.
Mainly from the App Store pre-installed on your iPad!
You can get new apps in the app store
There are many Emoji Apps in the App Store!
The 'App Store' is for purchasing and downloading apps to your device.
No,the apple appstore has WAY more games and apps then the amazon app store