PCalc

This is the best calculator app around. It is a combination of a good engineering/scientific calculator and a programmer’s calculator. The stack and RPN features are familiar and comfortable if you are accustomed to HP calculators. The app on Mac and iPhone work the same ways. It is nice to have the same app, regardless of whether I’m using the phone, pad, desktop, or laptop.

A great calculator, but I wish I could add a button to the control center or a widget. Please add that capability.

Modifiable keyboard (main and 2nd), programmable functions, decimal/hex/octal/binary bases, keyboard/result formats for engineering , accounting, scientific, and others. Built-in conversions (pounds to ounces, miles to kilometers, etc). Constants (speed of light, local tax rate, etc). Used multiple times daily. Makes iPad/iPhone a true computer. First app I bought when I first got into Apple in 2004. Favorite of all apps. Does everything a calculator should do, and more. JT is a man with a great

Outstanding fully featured but user mod-able calculator that is useable by a range of users from beginners learning math thru post doctorate mathematicians.

I have used PCalc for years, probably since it was first released, and it’s still the first app I add to my systems when I get a new one, whether it’s the desktop, iPad or iPhone version. Over the years I’ve focused on the developer tools it offers, and scientific functionality, and now it’s currency conversion when we travel. I have never found another calculator that offers the same functionality, and the only thing I wished it could do was graphing of functions.