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Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

John Cominio RPN Calculator Screenshots

iPad

iPhone

About John Cominio RPN Calculator

Scientific Reverse Polish Notation Calculator.

Supported functions include square root, reciprocal, change sign, sine, cosine, tangent, arc sine, cosine, tangent, hyperbolic sine, cosine, tangent, and arc hyperbolic sine, cosine, and tangent. Also 10^X, e^X, y^X, X^2, log, natural log, delta percent, pi key, factorial, and nth root keys.

Trigonometric functions also computed in Degrees, Radians, or Gradians.

What's New in the Latest Version 1.99

Last updated on Apr 24, 2017

Old Versions

This app has been updated by Apple to display the Apple Watch app icon.

Optimized iPad layout
Updated for current iOS
Bug fixes

Version History

1.99

Apr 24, 2017

This app has been updated by Apple to display the Apple Watch app icon.

Optimized iPad layout
Updated for current iOS
Bug fixes

1.95

Apr 24, 2014

Fixed issue where large (or small) numbers with exponents would overflow the display.

1.9

Dec 18, 2013

More bug fixes

1.8

Dec 11, 2013

Fixed bug with decimal entry

1.7

Sep 26, 2013

Updated for iOS 7. However, jCalc will still run on iOS 6.
Purchasing the in-app upgrade to remove ads on the iPhone will add an extra row of function keys where the ad banner used to display.

1.6

Sep 19, 2013

Enabled in-app purchase option to remove ads.

1.5

Sep 12, 2013

Option now available to remove the ad for 99 cents. When you remove the ad, you gain another row for keys, so less scrolling is necessary.

1.4

Sep 3, 2013

Corrected bug with decimal entry

1.3

Aug 28, 2013

Added pi key
Added 9 more functions
Added Grad trig units
Number entry better simulates HP calculator number entry

1.2

Aug 15, 2013

Native iPad support
Better looking user interface
16 math function keys
Support for Degrees and radians
Function keys slide left to right on iPhone for better looking display

1.1

Jul 26, 2013

Minor bug fixes Larger digits

1.0

Jul 23, 2013

Feedback Report

John Cominio RPN Calculator FAQ

How to download John Cominio RPN Calculator if it’s not available in your country?

Click here to learn how to download John Cominio RPN Calculator in restricted country or region.

What's the minimum requirements to run John Cominio RPN Calculator?

Check the following list to see the minimum requirements of John Cominio RPN Calculator.

iPhone

Requires iOS 10.0 or later.

iPad

Requires iPadOS 10.0 or later.

iPod touch

Requires iOS 10.0 or later.

What language does John Cominio RPN Calculator support?

John Cominio RPN Calculator supports English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese