Birdbrain for iPhone [iTunes Link] is an app that aggregates your Twitter statistics such as followers, following, blocked, and several other variables into one app. It also shows you differences in how many followers you've gained or lost. You can also see the specific people that have started following you or stopped following you. Clicking on a user will also allow you to view certain statistics about that user.

If you're someone who likes to keep track of your statistics on Twitter, Birdbrain could prove to be very useful to you. I could see this app being helpful for companies who want to use Twitter as a marketing tool and track trends. On the same token, I could also see it causing problems where people now have a way of knowing exactly what users have stopped following them (let the Twitter fights commence).

When you open the app for the first time, it'll grab initial info from Twitter. So at first, you can't see past information such as the last 7 days or last 24 hours. When you open the app in the future, it will begin to congregate past statistics and show you the differences.

The overall layout of the app is pretty slick. It's incredibly easy to figure out and very user friendly. One thing I wasn't sure of was how the app loaded your statistics. I wasn't sure what happens if you don't open the app for a week or so? Are the 24 hour statistics still accurate or what is it loading it from? That's what had me a little confused. It definitely doesn't load your statistics in the background.

I could also see some users wanting push notifications. Getting push notifications for when users follow or unfollow you would be a nice added feature but that would require Birdbrain to poll the Twitter servers quite often in order to aggregate and push the information. I could see that being a little overkill. Personally, I wouldn't really care to see notifications of when someone stopped following me, but I wouldn't mind having notifications for when someone starts following me. Then I'd disable the emails Twitter sends me. There's also a mentions tab within the app, which will congregate all your mentions and keep a running total of how many times you've been mentioned on Twitter.

Overall, it's a decent app that does what it says it will. If you've been looking for a way to monitor your Twitter statistics more closely, this app could be what you've been looking for.