PCalc 4+

The Best Calculator

TLA Systems Ltd.

    • $12.99
    • Offers In-App Purchases


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!

What’s New

Version 3.12.2

User functions and conversions can now call other functions and conversions. Within reason! Let's not get too recursive here.
You can now reference constants within user functions and conversions.
Added an option to blink the display if it is updated with an identical value.
Added a button to the conversions to manually update the currency rates.
Added a new alternative icon, "Howell".
Fixed a problem editing certain functions and conversions.
Fixed a problem with the tape not remembering it was open on an iPad.
Fixed a problem with some of the alternative icons.
Fixed a problem with incorrect theme colors.
Fixed a problem with incorrect labels in the settings.
Fixed a problem with key clicks in the widget.
Fixed a problem communicating with the "About by PCalc" app.

Ratings and Reviews

4.6 out of 5
73 Ratings

73 Ratings

Editors' Notes

Let’s be honest: It’s not always easy to get excited about a calculator. But PCalc is well more than the sum of its parts; this beautifully designed utility is filled with high-powered features and functions that will appeal to everyone from engineers to programmers to students going to, well, pre-calc. If you’re a fan of scientific notation, trigonometry, and/or unit conversion, add this to your home screen.

ShadowWalkerCA ,

Simply the best Calculator application

I have have used numerous calculators applications. I have also used, and purchased many just ok Calculator applications. Plus bad , or difficult Calculator applications to operate also.

Some Calculator applications when updated certain features stoped working correctly. Plus some had no developer support when purchased.

Hats off to the software developer for this simple to use, but powerful Calculator application.

Steve Tsuida ,

The first calculator that made me want to learn how to use all of the “weird” buttons.

This is the first calculator that made me want to sit down and learn how to use all the functions on calculators that I haven’t had to use since high school. It’s just flat-out beautiful, and deep, and clearly made with care and love. When’s the last time you could say you fell in love with a calculator?

I almost forgot, this is one of the most iOS-integrated apps out there. It comes with a fantastic Widget, and the best smart watch calculator app EVER—for any platform, not just WatchOS—thanks to its swipe-up function keys.

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


  • Game Center

    Challenge friends and check leaderboards and achievements.

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