What’s New

Version 3.9.2

Fixed a problem with blank keys in the Apple Watch app when running on watchOS 4.
Fixed a problem with PCalc accessing the clipboard when running functions and conversions.

Ratings and Reviews

4.5 out of 5
41 Ratings

41 Ratings

PLEASE FIX THIS...,,,,,!!!! ,

Tightly programmed highly configurable calculator

This calculator is one of the best calculators on the app store due to its extremely high customizability and large selection of themes to choose from. The only things the calculator can't do are financial calculations.

But there are still some features to improve the user experience. Namely, there should be a button that you can add that allows you to switch layouts with a press. Siri shortcuts is way to slow for layout switching. Also, on the display each line should have a distinct line size and the tape should have a configurable line size instead of larger tape.

Ledavies ,

Scrambled numbers

Great app! Love all the conversion features. My only issue is that on my iPhone 7s running iOS 12.1 the digits are scrambled when the phone is held in portrait mode. They are properly ordered when in landscape mode and they are always correct on my iPad. I can’t use the numbers “8” or “9” in portrait mode on the iPhone because they are out of place and covered by other numbers.

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!

Alain Gagné ,

Je suis comblé, mais...

J’utilise cette appli de calculette depuis plus de 3 mois et je dois dire qu’elle surpasse la HP 11C que je m’étais procurée à la fin des années 70 🤫😅... et, même, toutes ces applis que j’ai téléchargées ... je crois bien les avoir toutes essayées ! Certaines étaient vraiment très bien mais celle-ci, je le répète, se démarque en ce qu’elle permet, par exemple, de calculer les taxes de vente en un clic... mais le plus important est que tout se fait de la façon la plus intuitive qui soit !

Mais, bon sang, pourquoi a-t-on oublié le français ?


TLA Systems Ltd.
107 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 4+
© 1992 - 2019 James Thomson
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.

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