By TLA Systems Ltd.

  • Category: Utilities
  • Release Date: 2008-07-11
  • Current Version: 3.8.4
  • Adult Rating: 4+
  • File Size: 97.57 MB
  • Developer: TLA Systems Ltd.
  • Compatibility: Requires iOS 9.0 or later.
  • App Ratings:
    4.5/5 ( 1,351 Reviews)
  • Price:
PCalc App Ratings: 4.5
From 1,351 Reviews

PCalc App Description

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!

PCalc App Screenshots


App Reviews

  • Apple Watch 4 full support?

    By Product manager
    I looked forward to the update — is it possible to use 4 columns of calculator buttons on Apple Watch 4? The main operators would make this app and watch awesome! You’d still go to the second screen for the four that don’t fit.
  • Needs 64 Bit Support

    By Jim92677
    PCalc is a good app but if it is going to provide number base operations (hex, octal, decimal, binary) then it needs to add 64 bit support. Even cell phones are 64 bit. Software developers work in 64 bit environments while PCalc only provides support for 48 bits. I have emailed the developer at least 4 times since 2011 and still no 64 bit support. Lack of 64 bit support is inexcusable in this day and age. The best calculator for iOS bar none is free and the name of the app is Sci:Pro. It is 64 bit and has everything that you need at no cost. I give PCalc 3 start because it does everything else very well, but if you want to save some money and deal with a very responsive app developer, give Sci:Pro a try.
  • Awesome calculator

    By kagaku0
    Love the app, the most customizable and useful there is. Well worth the price! I would love it if you could change the layout on the Apple Watch, or take advantage of the Series 4 larger display to show buttons for add/multi/div/sub
  • Works great – ANIMATED PANDAS!

    By iphonereviewer#2
    This app runs circles around any other calculator in the App Store, and is well worth the price. No problem installing it on phone or Watch, also version for TV and macOS, and functions great on all devices. App author is very responsive & regularly updates the app with new features. if you run into a problem email or Twitter him instead of writing negative reviews! Holy 💩! Animated 🐼 stickers now! This calculator app does everything you could dream up — except for a kitchen sink — but it can calculate the size of one if you give it the dimensions!
  • Usered for years

    By yakster
    I definitely recommend this calc
  • Best for RPN

    By The emusifyer
    I much prefer RPN (it’s really RPL) and this app has worked great for years. I prefer this over others.
  • Best calculator yet

    By JohnB1111
    I have used many calculators over the last 50 years, and using those in comparison, this is the best one yet. Not convinced? Go to the pcalc website and download the manual!
  • Phenomenal

    By Zeke and Crowly
    Amazing calculator and one which is vigilantly overseen by its developer who keeps it as good as it gets. Well worth the investment.
  • Great app with accuracy issues

    By juntaone
    First, I really like PCalc overall, from its customization options to the Hitchhiker’s Guide reference to the widget. Great features and easy to use. My issue is that it still has accuracy problems. Enter .5 - .4 - .1. Instead of 0, PCalc returns -2.7755575616E-17. A few years ago I emailed the developer about this issue and he explained it was a problem in Apple’s libraries used to create the PCalc. Fair enough. At the time, Apple’s calculator app and Numbers both exhibited the same problem, as did many other calculators (but not all). However, for more than two years Numbers, Apple’s calculator app, and every other “current” calculator app , correctly handle the above equation. PCalc STILL gives the same incorrect answer (just tried it on a fresh install on a new iPhone). So either Apple fixed their libraries or the Numbers team and every other calculator programmer/team is using an alternative math library. Some will consider this an outlier issue, but I’ve had it crop up several times in calculations where precision mattered (it’s one reason I stopped using Numbers until Apple fixed it). You may ask why I use this app if I feel I can’t trust it. Well, I don’t. But I do keep checking it to see if it’s fixed because I’d like to use it. Please fix this issue once and for all and I’ll happily give PCalc the 5 stars it deserves. But right now it gets 2 stars for accuracy. 2018-8-23 Update Same issue remains. Great app marred by accuracy. And no word from the developer 😕. At this point I’ve switched to Calzy. Cool features and accurate.
  • Impressive

    By Rambo8649
    The best and most comprehensive and customizable calculator app for I have ever used. Really impressive. I ended up buying for MacOS too. I use primarily for mathematics and physics.