PCalc - The Best Calculator

PCalc - The Best Calculator

By TLA Systems Ltd.

  • Category: Utilities
  • Release Date: 2008-07-11
  • Current Version: 3.7.4
  • Adult Rating: 4+
  • File Size: 73.09 MB
  • Developer: TLA Systems Ltd.
  • Compatibility: Requires iOS 8.0 or later.
Score: 4.5
From 1,272 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!



  • Perfect calculator app!

    By j0hnml
    PCalc is excellent. I'm shocked that it isn't more prevelant in searches on the App Store. I downloaded far too many awful calculators to find this one. Keep up the great work!
  • The Best

    By SoroushKM
    You can‘t fine any better.
  • Give $9.99 and...

    By BozoTcat
    Give $9.99 and still get hounded for a tip to open minor visually aesthetic features.
  • Issue Resolved

    By eb1171
    I’ve always loved this app and I’m still a fan, but there is an issue with PCalc not retaining calculations once I go from the app to the home screen (or swipe to another app) and then go back into the app. I thought this may be an issue with iOS 11 being poor at memory management, but I restarted my phone, only opened up PCalc and had the same results (UPDATE) This turns out to be a setting under the Advanced section. Once I unchecked the Clear On Open option the behavior returned to what I expected. My rating is back to 5 stars, though I don’t know how that option got set as I wasn’t even aware of the Advanced Settings section
  • I love the tape!

    By quietstorm81
    I love the tape feature! I’m studying for the CPA exam and this app is a godsend! It saves me so much time! No more having to countlessly go back and run calls again because I think I forgot or fat fingered a number. Parentheses for calculating net of tax too! 😯 I wish I knew what this calculator could do when it went on sale during Christmas but 9.99 is way worth it. In time savings alone!
  • Powerful calculator

    By Profjlap213
    Amazing calculator. Small nit, i think that you should develop a more clean look. The fade colors are distracting and not consistent with a truly first class product.
  • Top calculator. Essential. My very favorite add-on app.

    By fjpoblam
    I found PCalc when I bought my first Apple product way back when. Been a loyal fan since. (Without PCalc I’d have to return to my Radio Shack EC-4075 Programmer’s Hex/Time Calculator—which doesn’t have a Tape.) PCalc has a permanent place on the dock of my iPhone, iPad, and MacBook Pro. This time of year we pre-figure taxes, email ourselves and then print the PCalc Tape, and hand it over to our CPA. Handy. The Hex converter I use daily, for fiddling with CSS and SVG code (often colors or UTF stuff). Tip figuring’s handy when we’re tipsy enough not to do it in our heads. (Get it? Tipsy? Tip?) Keyboard editing, icon fiddling, a game: all great. But the basic full-bodied calculator is the strong point. Worth the full price. The coffee of calculators. Or bacon. That’s saying a lot.
  • Worthy Replacement for HP 41 CV

    By Danger boy John
    My trusty HP 41CV finally died after 30 years of faithful service. This app is a great replacement for it. It has all the old functionality and simplicity I loved but so much more. You can customize just about anything and create any functions you want. Well done.
  • The best

    By revertTS
    It’s a wonderful calculator - the fully customizable layout and RPN support are particularly powerful. My only nit is the cold start time. I do wish startup were faster, or if the splash could be avoided to at least provide the illusion (though that may be difficult with the aforementioned custom layout support).
  • Worth the $$

    By dino62960
    I just bought this app and i have to say its great. Definitely the best calcualtor app out there. I really like the conversions, which i use a lot. A nice addition would be to add in a Construction Calculator for Feet and Inches. I would be willing to pay another $15 just for that. Please consider adding this calculator.