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 3.9.5

Added the "Hackett Number" to constants.
Various bug fixes.

Ratings and Reviews

4.6 out of 5
52 Ratings

52 Ratings

schroof ,

Great app, responsive developer

Hackett number... 😂🤣😂

usager très déçu ,


Why did your application displayed
« Censored » upside down in the result window?
I was just addind and multiplying numbers

Weary Northson ,

The best calculator and a Phenomenal app!

PCalc is one of the Best apps I’ve ever used, hands down. It has tons of useful features and is infinitely customizable. There are too many aspects of this app to mention here, but it absolutely justifies its price, as it’s so useful. The app is so enjoyable to use, I just calculate random things as an excuse to use the app. You can really tell the creator of PCalc is doing a labor of love. It is head and shoulders above any other calculator I’ve ever used.


TLA Systems Ltd.
107.7 MB

Requires iOS 10.0 and watchOS 3.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
In-App Purchases
  1. Small Tip $1.39
  2. Medium Tip $2.79
  3. Large Tip $6.99


  • 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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