Uh? Do you mean the App Store app? That is where you can purchase more apps.
No you can not share iPhone apps.
There are many GPS apps at iTunes which one can purchase for their iPhone. There are also many available at the Google store where one can purchase a GPS app for their Android cell phone.
You buy the iPhone app
apple create the apps on iPhone
Internet Explorer is not available for/compatible with the iPhone. Apple's default browser is called Safari and is usually already installed on the iPhone upon purchase. You can, however, purchase/download browser apps (e.g. Opera) from the App Store.
Yes most of them are the same apps and will work on one or the other or both.
Many smartphones support GPS apps including the iPhone and tHe Blackberry. If your current phone does not support GPS apps, you can purchase a GPS receiver chip.
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
In order for one to stalk someone owning a Blackberry with an iPhone one must first find the apps. The apps may be obtained on the application site for the phone.
Apps for IPads are widely available for purchasing online from tech retailers. Also one can purchase these apps from retailers such as Amazon and Ebay.
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).