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Best Rpn Calculator 48 Apps

248+ iOS apps curated and reviewed

4.3 avg rating
17 free apps
Updated August 2026

The best rpn calculator 48 apps on iPhone average 4.3★ across 248+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.

Compare top Rpn Calculator 48 Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1iHP48iHP48Free4.7★ (270)NoNoAug 2026
2RPN Calculator 48RPN Calculator 48$3.994.8★ (238)NoNoAug 2026
3R47 RPN CalculatorR47 RPN CalculatorFree5.0★ (23)NoYesAug 2026
4RPN Memory CalculatorRPN Memory CalculatorFree—NoYesMay 2026
5Free42Free42Free4.8★ (283)NoNoAug 2026
6i48i48Free3.5★ (196)NoNoAug 2026
7Calculator HD++Calculator HD++Free4.4★ (277)YesNoAug 2026
8Retro 15CRetro 15CFree4.3★ (212)NoNoJul 2026

Top Picks for Rpn Calculator 48

iHP48#1

iHP48 by Alexis Lorca

The classic HP48 improved
Editor's Choice
📊 Productivity
4.7😊(270 ratings)
Free
iHP48 screenshot 1
iHP48 screenshot 2
iHP48 screenshot 3
iHP48 screenshot 4
iHP48 screenshot 5

This app brings the powerful HP48 calculator experience to your mobile device. It offers enhanced performance, seamless file management, and a customizable interface with support for various HP calculator models. Enjoy a familiar and convenient calculator solution without needing extra hardware.

What We Love

  • 🚀 Excellent emulation of HP48
  • 👍 Familiar and nostalgic feel
  • 👍 Comprehensive functionality
  • 👍 Customizable skins

Room to Improve

  • 🐛 Occasional crashes or freezes
  • 🐛 Missed keystrokes when typing quickly
  • 🐛 Blank or flickering display
RPN Calculator 48#2

RPN Calculator 48 by Tom Kerrigan

RPN Scientific Calculator
Strong Contender
🔧 Utilities
4.8😊(238 ratings)
$3.99
RPN Calculator 48 screenshot 1
RPN Calculator 48 screenshot 2
RPN Calculator 48 screenshot 3
RPN Calculator 48 screenshot 4

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.

What We Love

  • 🚀 Excellent RPN implementation
  • 👍 Familiar and intuitive interface
  • 💡 Useful features for everyday calculations
  • 🚀 Reliable and stable performance

Room to Improve

  • 🐛 Lack of landscape mode support on iPad
  • 💡 Could use more advanced features like matrix operations
R47 RPN Calculator#3

R47 RPN Calculator by MARCEL DAN

HP Program Editor & Tutorials
Worth Considering
📚 Education
5.0(23 ratings)
FreeIn-App Purchases
R47 RPN Calculator screenshot 1
R47 RPN Calculator screenshot 2
R47 RPN Calculator screenshot 3
R47 RPN Calculator screenshot 4
R47 RPN Calculator screenshot 5
R47 RPN Calculator screenshot 6

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.

More Rpn Calculator 48 apps to explore

4
RPN Memory Calculator
RPN Memory Calculator
RPN Memory Calculator
RPN Multi Function Calculator
Free

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.

Reverse Polish Notation (RPN) inputSeven core calculator functionsMemory operations
📚 Education
(0)
free
5
Free42
Free42
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
🔧 Utilities
(283)
free
6
i48
i48
i48
by Automagic Software Pty Ltd
Free

This application emulates the HP48GX calculator on your iPhone or iPod touch. It allows you to perform complex calculations like matrix operations and function integration on the go.

HP48GX calculator emulationMatrix calculationsFunction integration
📊 Productivity
(196)
paid
7
Calculator HD++
Calculator HD++
Calculator HD++
by smalltech sarl
Free

This application offers a high-precision calculation engine with a user-friendly interface. It allows for real-time result display as formulas are typed, supports multiple undo actions, and enables easy switching between workspaces. Users can also access persistent history, print calculations via AirPrint, and share history via email.

High precision calculation engineResults displayed while typingMultiple undo functionality
🔧 Utilities
(277)
ad-supported
8
Retro 15C
Retro 15C
Retro 15C
by Greg Hewgill
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.

Complex number arithmeticMatrix calculationsNumerical root finder
🔧 Utilities
(212)
free
9
No Equal RPN Calculator
No Equal RPN Calculator
No Equal RPN Calculator
by Stan Corbin
Free

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.

Reverse Polish Notation (RPN)Always visible stack10 memory registers
🔧 Utilities
(7)
ad-supported
10
Calculator RPN
Calculator RPN
Calculator RPN
RPN everywhere with you.
$4.99
$7.99 | 38% OFF

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)
🔧 Utilities
(48)
free
11
Stack RPN Calculator
Stack RPN Calculator
Stack RPN Calculator
by Dario Bersiga
Free

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
📊 Productivity
(2)
free
12
Stackis RPN
Stackis RPN
Stackis RPN
RPN Calculator
Free
$0.99 | 100% OFF

A calculator designed for users who prefer Reverse Polish Notation (RPN). It offers a familiar interface for RPN users and includes support for duodecimal calculations.

RPN calculation styleDuodecimal (dozenal) supportFamiliar interface for RPN users
🔧 Utilities
(2)
free
13
Calculator with History +
Calculator with History +
Calculator with History +
No ads & Scientific calculator
Free

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.

Ad-free experienceCalculation historyVisual input
💰 Finance
(25K)
free with in-app purchases
14
The Best Calculator - Calc Pro
The Best Calculator - Calc Pro
The Best Calculator - Calc Pro
10 Powerful Calculators
Free

This app offers a comprehensive suite of 10 powerful calculators and 10 financial worksheets, designed to handle everything from basic arithmetic to complex scientific and financial calculations. It includes features like unit conversion, currency exchange, graphing, and statistical analysis, making it a versatile tool for students and professionals.

10 powerful calculators (Standard, Scientific, Graphing, etc.)10 financial worksheets (Mortgage, Loan, Compound Interest, etc.)Unit Converter with 3000+ conversions
🔧 Utilities
(4.7K)
free with in-app purchases
15
Complex RPN Calculator
Complex RPN Calculator
Complex RPN Calculator
Complex Numbers RPN Calculator
Free

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.

Complex number supportFour-level stackPolar and rectangular formats
🔧 Utilities
(22)
free
16
RPN Calculator free
RPN Calculator free
RPN Calculator free
by Benjamin Pisano
Free

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.

Scientific calculator functionsReverse Polish Notation (RPN) modeFast calculation
🔧 Utilities
(1)
free
17
RPNConverter: Convert from infix notation to reverse polish notation with the calculator
RPNConverter: Convert from infix notation to reverse polish notation with the calculator
RPNConverter: Convert from infix notation to reverse polish notation with the calculator
by Masaki Horimoto
Free
📚 Education
(0)
18
Enter — RPN Calculator
Enter — RPN Calculator
Enter — RPN Calculator
by Bastiaan Meelberg
$4.99
🔧 Utilities
(0)
19
RPN
RPN
RPN
Simple RPN Calculator
Free

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.

Reverse Polish Notation (RPN) inputStack-based operationIntuitive digit and operation buttons
🔧 Utilities
(0)
free
20
Calculator : Scientific Calculator & converter
Calculator : Scientific Calculator & converter
Calculator : Scientific Calculator & converter
Scientific Calculator
Free

This app offers a comprehensive scientific calculator with advanced functions for math, finance, and engineering. It includes unit and currency conversion, a constants library, and a biorhythm calculator for daily insights. The interface is intuitive and supports multiple calculation modes.

Scientific calculations (sin, cos, tan, log, etc.)Currency and unit converterConstants library (1500+ constants)
🔧 Utilities
(3)
free

FAQ about Rpn Calculator 48

What are the best rpn calculator 48 apps for iPhone?
iHP48 tops our rpn calculator 48 apps ranking as of August 2026, with a 4.7-star average from 270 App Store ratings, and it's free to download.
Yes — 17 of the top rpn calculator 48 apps we rank are free to download, including iHP48 and R47 RPN Calculator.
iHP48 has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 248+ rpn calculator 48 apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
iHP48 is a mobile application that revives the classic HP48 calculator experience. It provides enhanced performance and convenience, allowing users to access powerful calculator functions directly on their device without needing a physical calculator.
Key features include support for multiple HP calculator models (HP38, HP39, HP48, HP49, HP50), enhanced user experience with haptic feedback and zoom options, seamless file management for transferring and accessing calculator objects, and access to a comprehensive library of calculator packages and ROMs.