Why less keys on iPhone5?

I love this app, but recently I got a used iPhone 5 and proceeded to install Animoog on it, but was disappointed to find that despite the larger screen compared to my iPhone 4s, for some reason there are less keyboard keys when using this on my iPhone 5. How odd. And the keys are spaced apart much more than on my iPhone 4s too. I looked through the settings, but that doesnt appear to offer a fix. I guess Ill have to keep my older iPhone around just for Animoog, since the lack of keys makes this iPhone 5 version way worse.

illdub about Animoog for iPhone