It's called Thumb Keyboard. Original price is $2.46 and it takes up 7.3MB
I have been using it for about 10 minutes now but I must say it's pretty amazing. Supports Tablets, has 26 different themes to choose from, different sounds for Keypress and Haptic Feedback settings like Vibration Intensity that I love. I highly recommend it over keyboards like Swiftkey or GO Keyboard. I myself was using Keyboard from Android 2.3 forever but this new one far surpasses it.
So if you have the Amazon AppStore App go get it If not, then I suggest downloading their app so you can get your free daily apps.