Birdbrain for iPhone is on sale in the App Store. It tracks changes in and provides stats over time for your Twitter friends and followers, and is designed to be complementary to your favourite mobile Twitter client. I helped out on the UI design, and the app’s icon was created by the estimable Andrew Archer. Introductory pricing of US$1.99 for launch. If you’re a fan of Garrett Murray’s Ego and obsessed with all things Twitter, Birdbrain might be for you.
