Currently, when in landscape orientation, the keyboard is at the bottom of the screen. I had a request a few months ago for the option to place the keyboard on the left or right side of the screen in landscape mode. I like this idea. In the next release I will be adding this ability with a setting. You will be able to choose between having the keyboard at the bottom, left, or right while in landscape mode. Below is a screenshot of the keyboard on the right side.
I am also working on add regression to the calculator. More information on this to come!