You do not need Wi-Fi to get free games from the App Store or iTunes. You only need iTunes and an internet connection, because you can download any app on the App Store from iTunes.
download 'skype' from the itunes store, its a free app and you can make phone calls off of it so long as you got a wi-fi connection
To make an App for the iTunes App Store you will need the iPhone's Software Developers Kit which can be downloaded from Apple's developers site.
Go onto your apps and search for iTunes - there will be a free iTunes app which you can install
search it and select it in itunes
it is a free game on the itunes app store.
Download the Remote app from the app store. Free by Apple.
radio.com app
You can get free apps from iTunes or the App Store.
Visit app store or iTunes.
on the itunes radio on the music app
On January 23rd, 2013, the Deezer App (Version 4.7.3) is free on iTunes. This does not mean that it will continue to be free. Prices for Apps change frequently.