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PCalc Lite

PCalc Lite

The Best Calculator

214 ratings
530 reviews
📚 Education
🔧 Utilities
Free
In-App Purchases

Details

Released
December 19, 2008
Updated
October 24, 2026

Features

Developer

TLA Systems Ltd.
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PCalc Lite screenshot #1 for iPhone
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PCalc Lite screenshot #5 for iPhone
iphone
iphoneDuo
ipad
🧾$0.99 - $9.99
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About

This free scientific calculator offers essential features like RPN mode, unit conversions, and multiple undo/redo. It provides a taste of a more powerful version, with optional in-app purchases for expanded functionality.

✓Optional RPN mode
✓Multiple undo and redo
✓Unit conversions and constants
✓Two stylish themes
✓Apple Watch app
Show original description

What users say about PCalc Lite

Reviews of PCalc Lite are mostly positive: the Utilities app is rated 4.4/5 from 214 App Store ratings. What users like most: fast and responsive, clean and intuitive interface. Top complaints: occasional lags and crashes, lack of dark mode support. Summarized from real user reviews.

Positive things

  • 🚀Fast and responsive
  • 👍Clean and intuitive interface
  • 💡Customizable themes and settings
  • 🚀Efficient performance
  • 👍Useful conversion tools
  • 👍Excellent Apple Watch support

Negative things

  • 🐛Occasional lags and crashes
  • 🔒Lack of dark mode support
  • 🔒Inconsistent icon appearance after upgrades
  • 🔒Limitations in RPN mode on Apple Watch
  • 🔒Lack of financial calculator functions
See all reviews
+1

What's New in PCalc Lite

3.15.2

October 24, 2026

Improved support for iPhone Duo. Improved the grid view layout for the functions, conversions, and constants. Added a few more missing conversion units. Fixed a bug with the trigonometry functions. Fixed the app icons on older OS versions.

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11

Subscriptions & In-App Purchases

$0.99

Theme Pack

Adds seven new calculator themes, as well as additional digit styles and click sounds. PCalc has never looked better!

User reviews

Most RecentHighest RatedLowest Rated

They got greedy

Now (3.14.4) the calculator uses scientific notation even when the display doesn’t overflow. To turn this off, you have to purchase an add on pack. No thanks, I’ll live with the Apple default
FFisterus

支持中文

支持中文
💯💯🇨🇳😀

Guter Rechner

Vielseitig,aber gibt es einen Grund, warum es keine Wahl der Sprachen(languages) gibt?
TTIZIAN50

Feature request: Widget

There used to be a widget but Apple removed the legacy widgets. Please have an interactive widget calc that would be fire
Jjfresh330

Eher ein Scherzrechner (42) hat aber sei Jahren keine % Taste

Ich verstehe nicht, wie man einen derart ausbaufähigen Taschenrechner anbieten kann mit unzähligen Funktionrn, Layoutmöglichkeiten usw. Jedoch wird keine %-Taste abgebildet. Sorry Bro, das disqualifiziert diesen Rechner für mich. Absolut unverständlich, das so grundlegende Dinge fehlen. Wer’s denn unbedingt braucht, muss die Taste selber definieren bzw. eine andere ersetzen und die Funktion selber hinterlegen. Ich bin kein (Mathe-) Nerd. Und habe auch keine Zeit darin umständlich rumzufummeln.

Ich fordere den Macher auf, diese grundlegende Funktion nach Jahrzehnten ENDLICH NACHZULIEFERN.

Einfach unfassbar.
Show more
NNightgenga
See 525 more reviews

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User experience

🐞

Reported Bugs

3 issues

Calculations sometimes produce unexpected results

Bug

Upside-down text censorship feature is problematic

Bug

Purchased features not always accessible on Apple Watch

Bug
✨

Requested Features

4 requests

Add option to display thousands separators

Feature

Implement a history function to review past calculations

Feature

Provide more customization options for the widget

Feature

Add support for sexagesimal angle input and conversion

Feature

FAQ

What does PCalc Lite do?

PCalc Lite is a free scientific calculator that offers core functionalities such as an optional RPN mode, multiple undo and redo capabilities, and a comprehensive set of unit conversions and constants. It serves as a free introduction to the more advanced features found in the full version of the app.

What are the key features of PCalc Lite?

Key features include an optional RPN mode for advanced users, multiple undo and redo functions for easy error correction, and a wide range of unit conversions and constants. It also comes with two stylish themes and an Apple Watch app for on-the-go calculations.

Is PCalc Lite free to use?

PCalc Lite is free to download and use, offering a substantial set of features. For users who require even more advanced capabilities, such as engineering and scientific notation, hexadecimal, octal, and binary calculations, or a paper tape, additional features can be purchased individually or as a bundle through in-app purchases.

What devices is PCalc Lite compatible with?

PCalc Lite is designed for iPad and also includes an Apple Watch app, allowing you to perform calculations directly on your wrist. The description specifically mentions it as a great choice for your new iPad.

Who would benefit from using PCalc Lite?

This app is ideal for anyone who needs a powerful and versatile calculator, including scientists, engineers, students, programmers, and individuals who appreciate a feature-rich tool. The optional RPN mode and extensive unit conversions make it particularly useful for technical and academic fields.