This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.
ThetaCalc by Felix Stehli
Editor's Choice
๐ง Utilities
4.3(4 ratings)
Free
Best apps like goRPN
10+ similar apps compared and reviewed
4.5 avg rating
9 free apps
Updated July 2026
Looking for something like goRPN? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.
Top Alternatives to goRPN
4.0(4 ratings)
Free
This educational calculator promotes the use of Base Twelve (duodecimal) in math and science. It offers standard mathematical functions in both duodecimal and decimal modes, with automatic conversion between them. It utilizes Reverse Polish Notation (RPN) for calculations.
0.0(0 ratings)
Free
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SwiftRPN
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RePNCalc - RPN Calculator Pro
Easy Reverse Polish Notation
Free
This utility app offers a Reverse Polish Notation (RPN) calculator experience for iOS devices. It features customizable key layouts via swipe gestures and long-press options for stack items. External keyboard support is also available.
Reverse Polish Notation (RPN) inputSwipe gesture key layout customizationLong-press stack item options
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(1)
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bcRPN
by Paul Wilkins
Free
This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.
Reverse Polish Notation (RPN) inputComplex number calculationsExtended precision math
๐ง Utilities
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RPN Calc
by James Mattis
$0.99
This app provides a straightforward reverse Polish notation (RPN) calculator experience, inspired by classic HP models. It offers a clean interface with large buttons for quick calculations on iPhone, iPad, and Apple Watch, along with a convenient Today Extension for immediate access.
Reverse Polish Notation (RPN) inputClean, simple interfaceLarge, easy-to-press buttons
๐ง Utilities
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HP-35
RPN Calculator. HP-35, 45, 21
Free
Emulates classic Hewlett Packard RPN scientific calculators from the 1970s. Experience the original HP-35, HP-45, and HP-21 models on your iPhone.
RPN calculator emulationHP-35 modelHP-45 model
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(5)
free10
RLM-10CX
Scientific Calculator
Free
This scientific calculator offers a comprehensive suite of tools for finance, business, statistics, and complex scientific calculations. It emulates a classic calculator while leveraging modern iOS device capabilities for ease of use and advanced functions.
Finance and Business calculationsDate and Time interval calculationsAdvanced Statistics and Curve Fitting
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