Should take advantage of ipads screen

I was using a lot more when I just had an Ipod touch, but now with the ipad I can see a poor designed application.
When I am doing my calculations I do not bother with the background of the screen but how much of the screen I can use.
PLEASE INCREASE THE SIZE OF THE CALCULATOR FOR THE IPAD VERSION. Make it to fit ipads screen!

maurocct about Calc-12E RPN Financial, v3.3.1