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 3.11

This app has been updated by Apple to display the Apple Watch app icon.

Added support for iOS and iPadOS 15.
Added support for watchOS 8.
Added the ability to link calculations to notes via Quick Note on iPadOS 15.
You can now use explicit "floor" and "ceiling" rounding in user functions and conversions.
Fixed a number of icon problems.
Fixed a problem with the "Use B&W Icons" option for the Apple Watch resetting.
Fixed a problem creating custom functions, conversions, and constants after resetting iCloud data.
Fixed a crash with the Registers popup on iPad.
Fixed a crash when editing layouts on another device.
Fixed a crash when rotating the device.
PCalc now requires iOS 12.1 or later.

Ratings and Reviews

4.6 out of 5
8 Ratings

8 Ratings

Steelem1 ,

The best calculator

They best calculator hands down. I’ve been using PCalc for 10 years. It’s the best RPN calculator in the App Store.

KellR ,

A Stellar App

Quality, customisable, a very well made app that I just love!

lanceanz ,

A stellar example of design and programming

Since I purchased PCalc in July 2009 it has been my "go to" calculator - the one I use pretty much every day, whether it be for simple arithmetic, conversions, or trig. It's not as though I lack other physical and iOS calculators - I have many - but PCalc is simply the best looking and best to use. If you don't like something, there's a high chance you can "fix it" by changing one of the many settings. Most probably after first installing PCalc you will try all the keypads and display-fonts, and select your favourite, and that will be it. Over time you will find that PCalc is also an advanced calculator that meets pretty much anyone's needs with programmable functions and user-defined constants. The only times I use other calculators are where I have a special need, e.g. for an HP calculator-emmulator, time/date calculations, or building calculations.

The majority of iOS calculators are infrequently updated. PCalc gets regular updates which are always well thought-out. Details of any changes are immediately available within the application, along with usage notes. Just tap the Help button. I wish all developers would do this.

PCalc looks stunning on both iPhone and (especially) iPad. Most universal calculators are simply bigger on an iPad, but PCalc is optimised for each device. Apple and Microsoft are fond of the word "gorgeous". I'm sure you'll agree that PCalc is gorgeous-worthy. Everyone should buy PCalc.

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.

  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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