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

Added support for macOS 12.
Added support for Shortcuts on macOS 12.
Added the ability to link calculations to notes via Quick Note on macOS 12.
You can now use explicit "floor" and "ceiling" rounding in user functions and conversions.
Improved VoiceOver support.
Fixed a problem creating custom functions, conversions, and constants after resetting iCloud data.
Fixed a crash when editing layouts on another device.

Ratings and Reviews

4.7 out of 5
120 Ratings

120 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.

campyguy ,

Not the "best" calculator - PCalc is the "perfect" calculator

My engineering days are pretty much over since I started up a new business, now that I am running my own business I'm using PCalc even more than before on my Mac and on my iPhone. The depth of this app's capabilities still surprises me.

So happy with the HP48 RPN mode! I still own one to go with my HP15 from the late 80s... Yep, I'm old.

Never a upcharge for upgrades, I just forked over on the iOS app with a large tip (for additional app colors, completely unnecessary purchase) to keep TLA's lights on...

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.

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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