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.
Includes an Apple Watch app, so you can calculate on your wrist!
Fixed a problem with slow startup on iOS and iPadOS 14.
Fixed a problem throwing bananas in the About screen on iOS 14, iPadOS 14, and watchOS 7 (yes, really).