My 8 month old loves this application. It's well designed for young children. My wife and her friends were skeptical when I told them about it. The first time my baby saw it, she was not interested. The second time she saw it, two days later, she was squawking loudly, and slapping the ipad as hard as she could. Each time the screen reacted, she got more and more excited.
She's not dexterous enough to tap on one item, but I can see her eyes dart around as new object appear.
Wish there were more applications out there like this.