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Best Rpn Apps

224+ iOS apps curated and reviewed

4.3 avg rating
18 free apps
Updated July 2026

From beginner-friendly picks to power-user tools, our rpn list covers 224+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.

Compare top Rpn Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1RNP MOVILRNP MOVILFree2.2★ (214)NoNoJul 2026
2RPNRPNFree3.8★ (55)NoNoJul 2026
3Touch RPN calcTouch RPN calcFree3.4★ (207)YesYesJul 2026
4Free42Free42Free4.8★ (278)NoNoJul 2026
5bcRPNbcRPNFree4.8★ (4)NoNoMay 2026
6RPN Memory CalculatorRPN Memory CalculatorFree—NoYesMay 2026
7VPN - Super Unlimited ProxyVPN - Super Unlimited ProxyFree4.6★ (2.1M)YesYesJul 2026
8RPN-70 SDRPN-70 SDFree4.7★ (11)NoNoMay 2026

Top Picks for Rpn

RNP MOVIL#1

RNP MOVIL by Registro Nacional de las Personas Honduras

Editor's Choice
🔧 Utilities
2.2😞(214 ratings)
Free
RNP MOVIL screenshot 1
RNP MOVIL screenshot 2
RNP MOVIL screenshot 3
RNP MOVIL screenshot 4
RNP MOVIL screenshot 5
RNP MOVIL screenshot 6

This app streamlines birth certificate requests for Honduran citizens using the new DNI. It allows users to check for and correct inconsistencies in the registry database and validate the authenticity of birth and death certificates. Users can also request and store birth certificates directly on their iOS device after scanning their ID.

What We Love

  • ✅ Works on Android devices reliably
  • ⚡ Fast processing when functioning properly
  • 📱 Convenient mobile access to government documents
  • 🎯 Simple interface when operational

Room to Improve

  • 🐛 Frequent crashes and freezing
  • ❌ Non-functional for most users
  • ⏳ Constant 'loading' messages that never complete
RPN#2

RPN by Mediprocesos S.A.

Strong Contender
💪 Health & Fitness
3.8(55 ratings)
Free
RPN screenshot 1
RPN screenshot 2
RPN screenshot 3
RPN screenshot 4
RPN screenshot 5
RPN screenshot 6

Easily find affiliated healthcare providers by specialty and service type. Access provider phone numbers, authorization details, and download information in PDF format for convenient sharing.

Touch RPN calc#3

Touch RPN calc by Elvis Pfutzenreuter

Financial/Sci RPN calculator
Worth Considering
💰 Finance
3.4😊(207 ratings)
FreeAdsIn-App Purchases
Touch RPN calc screenshot 1
Touch RPN calc screenshot 2
Touch RPN calc screenshot 3
Touch RPN calc screenshot 4
Touch RPN calc screenshot 5
Touch RPN calc screenshot 6

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.

What We Love

  • 🚀 Excellent HP calculator emulation
  • 👍 Looks and works like the real thing
  • 👍 Portrait and landscape modes
  • 👍 Paid version is ad-free

Room to Improve

  • 🐛 Ads in free version
  • 🐛 Ads appearing in paid version
  • 🐛 Incorrect calculations

More Rpn apps to explore

4
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
(278)
free
5
bcRPN
bcRPN
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
🔧 Utilities
(4)
free
6
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
7
VPN - Super Unlimited Proxy
VPN - Super Unlimited Proxy
VPN - Super Unlimited Proxy
WiFi Security & Privacy VPN
Free

This app provides a free, unlimited VPN service with no activity logs and military-grade encryption. It offers access to content from over 40 server locations and supports multiple VPN protocols. Premium plans are available for enhanced features.

Unlimited speed, bandwidth, and timeAccess content from 40+ server locations5,000+ servers for free users
📊 Productivity
(2.1M)
free with in-app purchases
8
RPN-70 SD
RPN-70 SD
RPN-70 SD
Very rare vintage calculator
Free

This app is a faithful simulation of a rare 1974 financial calculator, offering all its original functions with enhanced features like more memory registers and a visual stack display. It's designed for users who appreciate vintage technology and need precise financial calculations.

Photo-realistic vintage calculator designFull HP-70 function simulationAnimated keys with sound
📊 Productivity
(11)
free
9
SwiftRPN
SwiftRPN
SwiftRPN
by Patrick Gelvin
Free
🔧 Utilities
(0)
10
iHP48
iHP48
iHP48
The classic HP48 improved
Free

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.

Supports HP38, HP39, HP48, HP49, HP50 calculatorsHaptic feedback and customizable zoom optionsSeamless file transfer via iTunes and Files app
📊 Productivity
(270)
free
11
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
12
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
13
Calculator - Pad Edition
Calculator - Pad Edition
Calculator - Pad Edition
Fulfill the missing calculator
Free

This app provides a comprehensive calculator experience, filling the gap for a built-in option on iPads. It offers basic, scientific, fraction, programmer, and tip calculations, along with unit and currency conversion. The interface is designed with a modern flat UI, supporting various orientations and multitasking features.

Basic and scientific calculationsFraction and programmer calculatorsUnit and currency converter
🔧 Utilities
(353K)
free with in-app purchases
14
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
15
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
16
goRPN
goRPN
goRPN
by Joel Perry
Free

This app emulates the functionality of the HP-16C calculator using a Reverse Polish Notation (RPN) input method. It is a minimal, open-source utility designed for users familiar with RPN calculators.

RPN calculatorHP-16C stack emulationOpen-source software
🔧 Utilities
(1)
free
17
RPN Calculator 48
RPN Calculator 48
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
🔧 Utilities
(237)
paid
18
R47 RPN Calculator
R47 RPN Calculator
R47 RPN Calculator
HP Program Editor & Tutorials
Free

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.

RPN scientific calculator47-series instruction setProgram editor
📚 Education
(19)
freemium
19
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
(45)
free
20
RPN Big Integer Calculator
RPN Big Integer Calculator
RPN Big Integer Calculator
Primes and Factorization
Free

This application provides a Reverse Polish Notation (RPN) calculator designed for handling very large numbers, up to 1024 bits. It specializes in prime number calculations and the factorization of substantial integers.

RPN calculator interfaceBig Integer support (up to 1024 bits)Prime Number Calculations
📚 Education
(2)
free

FAQ about Rpn

What are the best rpn apps for iPhone?
RNP MOVIL tops our rpn apps ranking as of July 2026, with a 2.2-star average from 214 App Store ratings, and it's free to download.
Yes — 18 of the top rpn apps we rank are free to download, including RNP MOVIL and RPN.
RNP MOVIL has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 224+ rpn apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
RNP MOVIL is designed to simplify civil registry procedures for Honduran citizens. It allows for the request of birth certificates using the new DNI, checking for and correcting inconsistencies in the registry, and validating the authenticity of birth and death certificates.
To request a birth certificate, you can scan your Honduran identity document (DNI) directly within the application. The app will then process your request, allowing you to obtain and store the certificate on your iOS device.

Related searches

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