PCalc

PCalc

The Best Calculator

777 ratings
489 reviews
#53 in paid Utilities
🔧 Utilities
💼 Business
$9.99
In-App Purchases

Details

Released
February 8, 2019
Updated
October 24, 2026

Features

PCalc screenshot #1 for iPhone
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PCalc screenshot #10 for iPhone
iphone
iphoneDuo
ipad
realityDevice
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About

A powerful calculator designed for professionals and students, offering advanced features like RPN mode, multi-line display, and extensive unit conversions. It supports various number systems and includes an Apple Watch app for on-the-go calculations.

✓Optional RPN mode
✓Multi-line display
✓Extensive unit conversions
✓Paper tape
✓Multiple undo/redo
✓Hexadecimal, octal, binary support
✓Apple Watch app
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+1

What's New in PCalc

3.15.2

October 24, 2026

Improved support for iPhone Duo. Improved the grid view layout for the functions, conversions, and constants. Added a few more missing conversion units. Fixed a bug with the trigonometry functions. Fixed the app icons on older OS versions.

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Subscriptions & In-App Purchases

$0.99

Small Tip

A small contribution to the PCalc tip jar!

Charts

Top Paid

📈 53+2

Utilities

This app rose +2 positions in Utilities chart.

Last updated on October 29, 2026.

User reviews

Widget is gone

Well not so much gone as incompatible with iOS 18. The calculator widget for this app was the old kind introduced with iOS 13 and iOS 18 doesn't support those. It needs an iOS 17 widget as well now. The full-calculator-in-a-widget is a big thing to lose, but you can't even launch it from the lockscreen now.
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Duo Update!

A truly amazing calculator app that’s constantly updated has everything you could ever think of AND it just got one of the best Duo updates. What a joy to use!

PCalc is the the best!

An amazing product from a passionate dev.
One ask, please bring back the checkered pattern icon for 1992. Nothing wrong with the new one but the original has been a staple of my home screen since as far back as January 2020.

Internal purchase problem

I think the application itself is a paid application. It is very unreasonable to pay money to unlock the icons in the settings. As a paid application, the icons in the application need to be unlocked for an additional fee. I really don't understand why this is so.

App-Icon Farbe Freischaltung ist Abzocke

Die Freischaltung aller App-Icon Farben ist zeitlich (oder auf x Änderung, das lässt sich nicht genau sagen, ich habe nicht mitgezählt) begrenz. Ich musste gertern innerhalb von 4h 2x zahlen um das App-Icon ändern zu können. Klarer Betrug.

Developer apps

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FAQ

What does PCalc do?

PCalc is a powerful calculator application designed for users who need advanced functionality. It caters to scientists, engineers, students, and programmers with features like RPN mode, a multi-line display, and support for various number systems.

What are the key features of PCalc?

Key features include an optional RPN mode, a multi-line display, a choice of button layouts, an extensive set of unit conversions and constants, a paper tape, multiple undo and redo capabilities, engineering and scientific notation, and support for hexadecimal, octal, and binary calculations. It also includes an Apple Watch app.

Is PCalc free to use?

The application is free to download and use, with in-app purchases available. This allows users to access additional features or customization options beyond the core functionality.

What kind of calculations can PCalc perform?

PCalc can perform a wide range of calculations, including standard arithmetic, scientific and engineering notation, hexadecimal, octal, and binary calculations. It also offers extensive unit conversions and constants, making it suitable for complex tasks.