This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.
0.0(0 ratings)
Free
Best apps like SwiftRPN
10+ similar apps compared and reviewed
4.5 avg rating
9 free apps
Updated September 2026
Looking for something like SwiftRPN? 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 SwiftRPN
ThetaCalc by Felix Stehli
Strong Contender
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bcRPN by Paul Wilkins
Worth Considering
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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.
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RLM-10CX
Scientific Calculator
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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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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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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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HP15C: Scientific Calculator
Classic Science Calc for you
$4.99
Relive the classic computing experience with a vintage scientific calculator. This app emulates a beloved 90s model, offering a nostalgic and functional tool for calculations.
Vintage scientific calculator emulationClassic 90s designFunctional for scientific calculations
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Free42
HP-42S Calculator Simulator
Free
This application is a faithful re-implementation of the HP-42S scientific calculator and its associated printer. It offers full functionality without requiring original HP ROM images and is an open-source project.
HP-42S calculator simulationHP-82240 printer simulationOpen source project
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PCalc Lite
The Best Calculator
Free
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 modeMultiple undo and redoUnit conversions and constants
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Panecal Scientific Calculator
For engineers and students
Free
This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.
Formula editing with cursor and swipeReuse past formulasVariable memory for calculations
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ad-supported