PCalc 4.3 - Ah.

Version: 4.3
Mac Platform: Intel
Includes: Pre-K'ed

OS version: 10.8 - 10.11
Processor type(s) & speed: Intel 64 Bit
RAM minimum: na
Video RAM: na

K'ed by the Appked Team

http://www.pcalc.com/english/whatsnew.html

What is new in 4.3:
Added full support for OS X 10.11 El Capitan.
Added an option to float the PCalc window above all other apps.
Added the "Split Screen iPad" layouts from PCalc on iOS 9
Added a delta percentage button to most layouts as the 2nd function of percentage.
You can now paste simple calculations into PCalc.
Changed behaviour of the percentage key in algebraic mode to match the Apple calculator - old behaviour still available via "Display percentage result" option in Advanced section of Preferences.
Now display "Error" rather than just blinking the display on an incorrect operation.
Fixed a problem editing user functions and conversions with conditional skip commands.
Core code has been updated to match PCalc 3.5.x on iOS.


http://i.imgur.com/7mmNNtk.png

PCalc is ideal for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode, a choice of button layouts, an extensive set of unit conversions, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations.