PCalc 4.8.1
PCalc 4.8.1 | macOS | 34 mb
PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions and constants, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations.
Compatibility: OS X 10.10 or later 64-bit
Mac App Store: https://geo.itunes.apple.com/app/id403504866