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 3.11.1

Due to ongoing iCloud problems, iCloud syncing of user data and layouts has been switched off by default. You can still manually export and import to sync. We will switch this back on when Apple fixes things.
Added four new alternative icons, "Ocean", "Jasper", "Salem", and "Quasar".
About screen now runs at 120Hz on suitable hardware.
Fixed a problem with too many messages about pasting from other apps.
Fixed a problem with the ticker tape vanishing when turned upside-down.
Fixed a problem importing settings and keyboard shortcuts.
Fixed a crash when pasting into the app.
Fixed a crash when rapidly tapping toolbar buttons.

Ratings and Reviews

4.5 out of 5
167 Ratings

167 Ratings

William Timberman ,

James Thomson is a genius

You want to see the real potential of mobile device software? You want to see superior visual aesthetics? Superior app functionality? Superbly intuitive human interface design? Exemplary respect for the user, including first-rate customer support? All of that in single app? Then download p-calc right now, and for God’s sake, pay the man. He’s a very rare talent indeed, and we’d all be the poorer if he decided to go somewhere else to make a living.

meta732 ,

iPhone X, iOS 11.x

Orders of magnitude better than the stock calculator and so many others. The option to add only the additional features that one requires make for an affordable, intuitive experience. Look no further if you want an app that is maintained consistently and always works with the latest devices (even the free version without any additional features unlocked) because PCalc Lite delivers. These are the developers that we should support.

EvilerMasterDog ,

Finally, a calculator without ads!

It’s sad that it has to be said today, but wow was it hard to find a calculator that looked decent without ads and for free. This actually makes me want to donate or buy the pro, even though I just do simple calculations. One suggestion, I wish I could change the icon to something other than “42” just so I can recognize it easier. Thank you devs!!

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


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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