PCalc 4+

The Best Calculator

TLA Systems Ltd.

    • 4.7 • 134 Ratings
    • $9.99



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.

What’s New

Version 4.10.4

Improved the appearance of the app.
Added menu commands for copying and pasting numbers with U.S. formatting.
Added menu commands for copying and clearing the tape.
Added a new digit style, "Matrix".
Changed the display of numbers between 0.1 and 1.0 to be more consistent in Engineering mode.
You can now set images for the categories of custom functions, conversions, and constants.
iCloud syncing of user data is now switched on again by default if you are running macOS 12.4 or later.
Fixed a problem with operator button selection being lost.
Fixed a problem with Shortcuts always opening the app.
Fixed a problem with the conversion actions in Shortcuts when set to "Ask each time".

Ratings and Reviews

4.7 out of 5
134 Ratings

134 Ratings

JohnBSirius ,

The only calculator app you need

I've been using this app for far longer than I can remember, but unlike my memory, PCalc just keeps getting better and better. Whenever there is a major mac or iOS (I also own PCalc on mobile) operating system version, PCalc is consistently one of the few apps that are ready and updated on day 1. The app itself has been incredibly stable. There are more tools in the app than I know what to do with. And now with version 4.9, there are even more customizations available. This app offers so much value for the price paid; and all of the above can be said about the mobile version of the app.

IanJ78 ,

PCalc 4.5.3 on 10.8 bug

This is really a great app, but I'm using 10.8.5 Mountain Lion, yes I know it's an old os, and there's a bug I noticed.
About a third of the time opening the app, the number screen comes up blank. Not with a zero or anything else, just blank.
After a few more times of closing then opening, it works fine again, finally showing numbers. Is this just a Mountain Lion bug,
or is anyone else having this problem? Oh well, it actually works sometime, just wondered if anyone else has experienced this too.
I'm using version 4.5.3.

beast006 ,


If you’re an engineer, programmer, scientist, number lover, or calculator fanatic then welcome home. This app is for you. You will be giddy with happiness from the functionality and ui. You will experience joy you never thought a calculator could possibly bring you. It can even calculate the ultimate number.

-To the devs, thank you so much. I’m estatic that I found this app. It’s like my years of frustrated search has concluded. A search I didn’t realize existed until I found this. I never have to switch calculators or get frustrated from limits.

App Privacy

The developer, TLA Systems Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


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  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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