Big-Screen iPhone 5 Apps (Social Apps)

Echofon Free
This popular Twitter client gives you an extra line or two of Tweets on your iPhone 5. Paying $4.99 gets you a few lines more in Echofon Pro, which ditches the banner ads at the top of each screen. Echofon is a simple, fast, and easy-to-use Twitter client with the basic features of mentions, direct messages, lists and search. Nothing too fancy, but fully iPhone 5-ready, and very useful.

Facebook FreeThe official Facebook app for iPhone is sometimes derided, but everybody uses it. So it's good to see that it supports the full length of the iPhone 5's screen, at least. Just like with other information apps, the iPhone 5 screen brings an extra line or two of text to your Facebook updates before you have to scroll.

Yelp FreeYelp is a must-download on the iPhone 5, because Apple's new Maps app depends on it; when you click on businesses in Maps to see reviews, iOS tries to throw you to Yelp. So it's a good thing that Yelp works very well on the iPhone 5, including using the full length of the 4-inch screen to show information.