Best Rpn Calculator Apps

4.3😊(212 ratings)

Free

This app emulates a classic RPN scientific calculator, offering advanced features like complex number arithmetic, matrix calculations, and programmability. It provides a functional and complex tool reminiscent of 1980s calculators.

What We Love

🚀 Lightning-fast calculator
👍 Authentic look and feel of HP 15C
🚀 Faster than real HP 15C
👍 Excellent RPN emulation
👍 Familiar interface for HP 15C users
👍 Great representation of original calculator
👍 Obvious labor of love by developer

Room to Improve

🐛 Doesn't save settings, programs, or memory
🐛 No key press feedback or sound
🐛 Blinking display issue with large calculations
🐛 Bugs with HMS conversions
🐛 Can't close app on newer iPhones

Free42 by Thomas Okken

HP-42S Calculator Simulator

Worth Considering

4.8😊(283 ratings)

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.

What We Love

🚀 Faithful reproduction of HP42S
👍 Identical to physical calculator
👍 Runs all original programs
👍 Convenient to have on phone
👍 Haptic feedback on button presses
👍 Customizable skins
👍 Actively maintained and updated

Room to Improve

🐛 Screen not filling entire display on newer devices
🔇 Configurable key click sound missing
🔇 Lack of loud click sound feedback

More Rpn Calculator apps to explore

bcRPN

by Paul Wilkins

Reverse Polish Notation (RPN) inputComplex number calculationsExtended precision math

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.

HP Program Editor & Tutorials

RPN scientific calculator47-series instruction setProgram editor

This scientific calculator uses Reverse Polish Notation (RPN) to help you break down complex problems. It offers a full 47-series instruction set with advanced functions and a program editor. The free version includes extensive tutorials and documentation.

📚 Education

(23)

freemium

RPN Memory Calculator

RPN Multi Function Calculator

Reverse Polish Notation (RPN) inputSeven core calculator functionsMemory operations

This application provides a straightforward reverse Polish notation (RPN) calculator with essential functions and memory operations. It also includes integrated unit conversions for various measurements, allowing for quick conversions directly within the app. The calculator remembers your session, preserving all registers and memory values for future use.

📚 Education

(0)

No Equal RPN Calculator

by Stan Corbin

Reverse Polish Notation (RPN)Always visible stack10 memory registers

This scientific calculator utilizes Reverse Polish Notation (RPN) for efficient complex calculations, mirroring the functionality of classic HP calculators. It features a continuously visible stack for better tracking and includes 10 memory registers, plus a dedicated quadratic equation solver.

MB-88F Fractional Calculator

(7)

ad-supported

Exact RPN fraction calculator

RPN Calculator. HP-35, 45, 21

RPN calculator emulationHP-35 modelHP-45 model

Emulates classic Hewlett Packard RPN scientific calculators from the 1970s. Experience the original HP-35, HP-45, and HP-21 models on your iPhone.

Financial/Sci RPN calculator

RPN financial calculatorRPN scientific calculatorProgramming functions

This app offers a powerful RPN calculator with financial and scientific functions, mimicking popular industry-standard models. It includes programming capabilities and expandable flavors for diverse calculation needs.

💰 Finance

(208)

free with in-app purchases

Calculator RPN

RPN everywhere with you.

$4.99

This scientific calculator offers Reverse Polish Notation (RPN) for faster calculations. It includes 54 mathematical functions, coordinate conversions, and unit conversions, all within a simple interface.

RPN calculation mode54 mathematical functionsTrigonometry (simple and hyperbolic)

(48)

Calculator with History +

No ads & Scientific calculator

Ad-free experienceCalculation historyVisual input

This free calculator app offers a fast, ad-free experience with a visual input and calculation history. Customize your experience with various keyboard sounds and colors, and access advanced scientific functions when needed.

💰 Finance

(25K)

free with in-app purchases

RPN Calculator free

by Benjamin Pisano

Scientific calculator functionsReverse Polish Notation (RPN) modeFast calculation

This utility app offers a scientific calculator with Reverse Polish Notation (RPN) mode for faster calculations. Its simple interface is designed for engineers and scientists, providing efficient computation on iPhone devices.

(1)

RePNCalc - RPN Calculator Pro

Easy Reverse Polish Notation

Reverse Polish Notation (RPN) inputSwipe gesture key layout customizationLong-press stack item options

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.

free with in-app purchases

(1)

RPN Calculator 48

RPN Scientific Calculator

$3.99

This app offers a scientific calculator with Reverse Polish Notation (RPN) functionality, providing an alternative to the default calculator. It features a large, easy-to-read display, a 100-entry stack, and extensive undo/redo capabilities. Its design is inspired by classic HP calculators.

Reverse Polish Notation (RPN)Scientific calculator functionsSwipe gestures for undo/redo

True four-level stack, undo

(238)

paid

Enter — RPN Calculator

This scientific calculator displays major functions on screen and utilizes a stack for calculations. It supports a stack of up to 4 values but can store many more numbers depending on device memory.

Visible scientific functionsRPN (Reverse Polish Notation) inputStack display for up to 4 values

Simple RPN Calculator

Reverse Polish Notation (RPN) inputStack-based operationIntuitive digit and operation buttons

This utility app functions as a reverse Polish notation calculator. Users input numbers and operations using a stack-based interface to perform calculations. It's designed for straightforward mathematical tasks.

(0)

Complex Numbers RPN Calculator

Complex RPN Calculator

Complex number supportFour-level stackPolar and rectangular formats

This scientific calculator utilizes a four-level stack and natively handles complex numbers. It allows users to input and view numbers in both polar and rectangular formats, remembering its state and offering 10 memory locations.

(22)