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 3.9.3

Added an option for the widget to use an advanced layout with many more functions.
Added contextual menus for the display on iOS 13.
Added copy and paste as ASCII/UTF-8/UTF-16/UTF-32 to the contextual menus on iOS 13.
Added options to the display settings to turn off contextual menus and drag and drop.
Added a "Haptic Touch" section to the settings on iOS 13, to configure the app icon menu.
Added a new alternative icon, "Cheri".
Fixed a problem with user constants not syncing to the Apple Watch app.
Fixed a problem with some of the 3D/Haptic touch commands not working.
Fixed a problem with dragging between display lines in dark mode on iOS 13.

Ratings and Reviews

4.6 out of 5
43 Ratings

43 Ratings

MRKS-123 ,

Excellent Calculator and then some...

This app has everything you want and need from a calculator. I have not found a function that I can’t use. I highly recommend this app for all your math and basic calculator and conversion needs.

The only issue is some odd thing that happened for the first time today (Apple just updated it’s iOS) after entering values into M+, the calculator displayed “Censored!” Upside down. When I went back into the app I was exactly where I wanted to be and it hasn’t happened again. Fingers are crossed.

Developer Response ,

Thank for your review. We're glad you're enjoying using PCalc.
Also congratulations on stumbling across the Censorship Easter Egg! 

It's a small joke which was included in 2009 and has been in the app ever since. If you are interested in the details you can find them in our blog . If all you want to do is to prevent you stumbling across it again follow these steps:
1) Turn off Orientation Lock
2) In PCalc go into the “Advanced” section of the settings
3) Scroll all the way down to the bottom of the page
4) Turn your phone upside-down
5) Still keeping it upside-down, you’ll now be able to scroll slightly further to reveal a brand new option
5) Switch censorship to “Off”

Ledavies ,

Scrambled Numbers (2)

That was it! I reset the “button edit” and now the display is correct (I had no idea the buttons could be edited). Thanks! Great calculator!

Developer Response ,

Sounds like an accidental button layout edit - press and hold on any button for a few seconds and choose reset from the dialog that appears. That will fix it!

Mr. Kaptein ,

iCloud Sync

Amazing app though the only issue is it will not sync my data or layout to my iCloud account.

Developer Response ,

It should be working - could you send us an email to Hopefully we can help resolve this.


TLA Systems Ltd.
107.5 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.

More By This Developer

You May Also Like