Followers on Twitter — Social Networking — $0.99 (Pro version)
Alright, maybe it only does that for me, but what Followes on Twitter definitely does is give you a quick look at your follower numbers. In addition to what Twitter will tell you, it also lets you know when people take you off of their feeds, how many users aren’t following you back, and how many you’re snubbing. You can also easily delete multiple tweets at once, and I know a guy who could probably make good use of that feature after some unfortunate late-night drunken tirades.
Oh, you don’t know him. He lives in Canada.