PCalc Lite 4+

The Best Calculator

TLA Systems Ltd.

    • 4.8 • 37 Ratings
    • Free
    • Offers In-App Purchases


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.PCalc Lite is a fully functional and free taste of our very popular scientific calculator. It includes an optional RPN mode, multiple undo and redo, unit conversions and constants, as well as two stylish themes and our highly praised design. A great choice for your new iPad!

If you like what you see, the full version has many more settings and themes, a paper tape, engineering and scientific notation, and full support for hexadecimal, octal, and binary calculations. You can also now purchase extra features directly from inside PCalc Lite. Buy them individually, or buy everything.

Includes an Apple Watch app, so you can calculate on your wrist!

What’s New

Version 3.13.1

Fixed a crash in the settings if you were using the 2013 app icons on iOS 17.

Ratings and Reviews

4.8 out of 5
37 Ratings

37 Ratings

BrightonPete ,

Best calculator!

I had switched to another calculator years ago, but just today realized it had been removed from the App Store. Too many problems, never fixed.

But I am back to PCalc Lite now, which is the best calculator out there! After all these years, my previous purchases are still there.

I'm glad I am back!

Anth82 ,

UPDATE Super laggy

Thank you! Turning off the clicks has resolved the issue.

The app is incredibly laggy on my iPad Pro 3rd Gen. It’s unusable.

Developer Response ,

Hi there, we're aware of a bug that appears to be connected to Bluetooth audio devices and sounds, but rather hard to fix. Please try switching off Key Clicks in the PCalc settings and that should hopefully make PCalc work at the normal speed again.
If that doesn’t help, please get in touch by emailing support@pcalc.com so we and try and get to the bottom of this.

User8050 ,

Way to Access Scientific Calculations Without Turning Phone?

Hey there!

Great app so far. I’m curious if there is a way to access scientific functions without having to rotate the phone into landscape mode every time? I know some calculator apps like Numerical^2 that allow you to swipe the calculator key pad back and forth to access the scientific buttons when in portrait mode. Is that something that could be implemented in this app? Thanks again!

Developer Response ,

In the full version of PCalc (or with the Engineering Pack In-App purchase in PCalc Lite) there are many other layouts available, including a vertical layout with scientific functions. You can even customise the layout to your exact preferences. Hope that helps!

App Privacy

The developer, TLA Systems Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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