PCalc - The Best Calculator

PCalc - The Best Calculator

By TLA Systems Ltd.

  • Category: Utilities
  • Release Date: 2008-07-11
  • Current Version: 3.7.3
  • Adult Rating: 4+
  • File Size: 72.49 MB
  • Developer: TLA Systems Ltd.
  • Compatibility: Requires iOS 8.0 or later.
Score: 4.5
From 1,178 Ratings


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!



  • The iwatch #1 calculator

    By Princejron
    Best calculator app on the iwatch, hands down!!! All the conversions on your wrist, so convenient.
  • Best dedicated calculator app on the Apple platform.

    By masochist_
    I have been developing something of a calculator hobby, collecting vintage HP calculators, reading manuals for fun, watching YouTube videos about them, etc. I’ve tried a number of different calculators on the Apple platform (macOS and iOS), both the stock calculators and several custom calculators. PCalc has more features, is better supported, and has more fiddly details available when the user wants them than any other dedicated calculator I’ve tried. The apps work exactly as I would expect, and most importantly fit in with the rest of the OS. There’s so much polish and attention to detail here; PCalc stands out as a gem on the Apple platform. If you want more than the stock calculator, but don’t want a fancy CAS or graphing tool, PCalc is where you should start looking. Bonus points for all the details emulating vintage HP calculators, particularly the RPN support and the Voyager series layout.
  • Absolutely the best

    By OregonWave
    I use this so much it’s in my dock. Whether it’s the quality button layout, formulas or conversion utilities it does it. This is a must have for just about anyone. They also have always been on top of iOS upgrades too. It also has the most functional calculator app for Apple Watch users.
  • Best Calculator Of Any Kind

    By E-Paul
    A long-time user of PCalc lite, I recently upgraded to the full version. I am delighted. This is the best calculator of ANY kind. As a physicist, mathematician and programmer I really appreciate the easy access to constants of all kinds, unit conversions, base arithmetic, RPN. It’s all in there. It turns my iPad into the ultimate calculator and numerical tool. Better yet, it requires no documentation. It all works the way you would expect it to. Get it now—you will not be disappointed.
  • Great replacement for broken iOS 11 calculator

    By Bifferooni
    I came here because Apple’s iOS 11 calculator now can’t keep up with even moderate typing speeds. Pcalc is a great replacement for Apple’s broken app. I hope Apple realizes that accuracy is more important than animation in a calculator app!
  • No better calculator on any platform

    By VPNavyFS
    PCalc is customizable in more ways than I’ll ever use, looks great on iPad, iPhone, and Mac, and unlike calculators from certain large fruity companies, doesn’t have any difficulty with how fast you enter digits. It does RPN, too, if you’re a fan of old school HP calculators as I am. Nothing but praise for this app and its developer.
  • Perfect - hands down the best calculator

    By TimSpears
    Let's face it - ten bucks for a calculator app is a lot. For the tool that does the job I'm happy to pay it. This app has been maintained diligently for years and continually improved.
  • 5*+++

    By Idn86i
    Absolutely in love with this calculator app. How can anyone in the right mind give this app anything lower than 5 stars?? With all the features included, this thing is worth more than the price tag of $9.99. I even gave the devs some tips for the generous updates and loaded features. If you don’t have money and don’t know what you’re buying then use the free version, ahem* those 2-3 reviewers. Update: I’ve been overwhelming impressed by the quick responses from the dev (James).
  • Great app

    By Rlkcpo
    I love this calculator and use it daily. Would like to see the binary feature go beyond 16bits though.
  • Best calculator since the days of the HP35

    By NMSooner
    Best calculator I have ever had on my iPhone!! Reminds of of when I bought my HP 35 in the old days!!