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PCalc Lite - The Best Free Calculator

By TLA Systems Ltd.

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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.PCalc Lite is a fully functional and free taste of our very popular scientific calculator. It includes an optional RPN mode, multiple undo and redo, unit conversions and constants, as well as two stylish themes and our highly praised design. A great choice for your new iPad!

If you like what you see, the full version has many more settings and themes, a paper tape, engineering and scientific notation, and full support for hexadecimal, octal, and binary calculations. You can also now purchase extra features directly from inside PCalc Lite. Buy them individually, or buy everything.

Includes an Apple Watch app, so you can calculate on your wrist!

What's New in Version 3.5.2

Added support for 3D Touch on the iPhone 6s and iPhone 6s Plus.
Added 3D Touch icon shortcuts for quick access to PCalc functionality.
Fixed a problem with pasting into PCalc on iOS 7.

With the "Power User Pack" installed:
Added a new "3D Touch" section to the settings to configure the shortcuts.

With the "Engineer Pack" or "Programmer Pack" installed:
Press the display to peek at the tape, registers, or RPN stack.
Fixed a problem with the “Programming” layouts.


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Apple Watch

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Customer Reviews

Great app for iPhone and Apple Watch!

Great app for both your iPhone and especially your Apple Watch. You must have Watch OS2 loaded but it works flawlessly! The voice dictation is a great feature and tip calculator is a bonus!
I had an issue installing on the watch but I do not think it was the app and probably more user error. Support via email was great. I highly recommend this app.


I tried half a dozen calculators that (supposedly) work on the Watch before finding this one. Some were sluggish, at least one didn't work at all, and all felt "klunky." This is the first one that seems to work without a hitch.

Great app and support

Love this app and use it as my sole calculator on both my iPad and iPhone. Awesome response from their support as well. I use it in RPN mode exclusively. I highly recommend this app for anyone looking for a standard, scientific, or RPN calculator.

PCalc Lite - The Best Free Calculator
View In iTunes
This app is designed for both iPhone and iPad
Offers Apple Watch App for iPhone
  • Free
  • Category: Utilities
  • Updated:
  • Version: 3.5.2
  • Size: 14.7 MB
  • Apple Watch: Yes
  • Language: English
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

0 0 0 We have not received enough ratings to display an average for the current version of this application.
All Versions:

Top In-App Purchases

  1. Conversion Pack$0.99
  2. Complete Pack$9.99
  3. Multiple Line Pack$0.99
  4. Power User Pack$0.99
  5. Engineer Pack$2.99
  6. Theme Pack$0.99
  7. Programmer Pack$2.99