no because the apps are for an apple iphone and apple wants you to buy a mac so that they can make more money
yes it is
You buy the iPhone app
apple create the apps on iPhone
Photo merger
no you cannot use ipod and iphone apps on itunes, but you can buy the apps on itunes and put them on your ipod and iphone
Although iPads can download apps made only for iPhone/iPod Touch, the iPhone can only download iPhone or iPhone/iPad apps. Apps made only for the iPad do not appear on the App Store. Luckily most of these apps have an iPhone counterpart such as Angry Birds (iPhone) and Angry Birds HD (iPad only).
The good news is that IPhone tracking is available and the ... you can look out for such as the GPS tracking ... iPhone Jailbreak News - iPhone Apps - iPhone ...
yes, but not all iphone 4 apps are available on the iphone 3gs/3g/2g becuase they are too high resolution apps, or need a front facing camera.
an ipod is very similar to an iphone, just cheaper. you can get apps for an ipod that make it do the same as an iphone
you have to go on your itunes and make the folder on your computer then sync it to your iPhone/iPod
If you search in the Apple App store under voice changers there are voice changers apps if you wanted to make prank calls.