The dear Doctor teaches the kids how to pick a real calculator app:
It can’t be just a four-function calculator. Have some pride.
I almost feel like Dr. Drang threw a bone to the nerd brigade by including Soulver. It’s clever, but it just doesn’t come close to PCalc.
As a side note: you should probably subscribe to and religiously read any site that is smart enough to have Dr. Drang review calculator apps. Good design can easily cover sloppy editorial standards. From what I can tell, The Sweet Setup has good design as bonus to the lofty standards.