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 3.7.5

Added an option to show x10 in scientific notation, in the Advanced settings.
Added options to turn off the labels and info on the display.
The display is now smarter about using the available space.
You can now change the tint color for the themes "A Touch of Color", "Blue Sun", "Brawn", "Flux", "Primary Colors", "Rough Draft", and "Widget".
You can now use hyperbolic trigonometry in user functions and conversions.
The About screen now has an ambient electronic soundtrack composed by Squillopian.
Improved the iPhone X support yet again.

Ratings and Reviews

4.9 out of 5

24 Ratings

24 Ratings

Excellent Calculator


Excellent App with Excellent Support from developers. Easily a 5 Star App. The new update takes it to the next level and I shall purchase Macbook version in order to support development.


Steve :o)

I’ve been using the light version for a year and decided to upgrade

What you need and more


It’s a calculator. I enjoy the fun extras like custom icon and themes through to a hidden game in it


TLA Systems Ltd.
88.7 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
© 1992 - 2018 James Thomson
In-App Purchases
  1. Small Tip £0.99
  2. Medium Tip £1.99
  3. Large Tip £4.99


  • Family Sharing

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

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