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 3.10.5

Fixed a problem performing conversions via Siri Shortcuts.

Ratings and Reviews

4.8 out of 5
53 Ratings

53 Ratings

KAS118 ,

Really Pleased With This

I decided to finally purchase a calculator for my iPad as there is no Apple version as standard.

There are many what are available in the App Store - but I chose this due to its range of scientific functions plus a number require a yearly subscription whilst this was available as a one-off payment and hence works out to be significantly cheaper.

The calculator itself is great, easy to customise and furthermore you can download a very informative instruction manual for it.

However, what raises it above all the others and makes it that much more intriguing - is its obvious references to The Hitchhikers Guide to the Galaxy - plus the rather fun Easter Eggs that exist within it - hint enter the About Screen.

Clearly I haven’t tried all the other Calculator Apps in the store - so I can’t say hand on heart this is the best; but it’s hard to imagine one that matches it for both the serious ‘functions’ it provides plus the more ‘fun’ features.

I also understand that this was one of the first calculators to be offered for Apple Products (going back to the early Macs).

Highly Recommended.

Dailymailhater ,

THE go to calculator

This has been my go to calculator for 7 years. Easily programmable, meaning I can set up one touch buttons so my staff can do calculations on their own without bothering me.
Constantly updated, making use of shortcuts etc that put other much bigger app developers to shame.

alangrehan ,

Fantastic App

It has been my go to calculator app for a while but for the last few weeks I’ve been using it more than ever as I’ve been home schooling. Great app. Easy to use. Every function I could need and customisable.

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 based on, for example, 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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