THE best calculator on the App Store
The iOS 8 update makes it even better!
I now have a PCalc widget in my Notification center so I can start calculating something while in any app (or from the lock screen) and resume that calculation straight from PCalc
Also the buttons are now totally customisable, so if you dont like the layout, you can change it to make it your own!
And theres a lot of themes, I like that too
Felix Lapalme about
PCalc, v3.3