Best apps like RPN

10+ similar apps compared and reviewed

4.6 avg rating

8 free apps

Updated October 2026

RPN

Tomas Stankiewicz Baldassarri

📚 Education

🔧 Utilities

RPN is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to RPN

CalcStak by JOEL ANDREW ROSINBUM

A RPN Calculator

Editor's Choice

🔧 Utilities

0.0(0 ratings)

FreeIn-App Purchases

Enter — RPN Calculator by Bastiaan Meelberg

True four-level stack, undo

Strong Contender

🔧 Utilities

0.0(0 ratings)

$4.99

RePNCalc - RPN Calculator Pro by Michael Redig

Easy Reverse Polish Notation

Worth Considering

🔧 Utilities

5.0(1 ratings)

FreeIn-App Purchases

RePNCalc - RPN Calculator Pro screenshot 1

RePNCalc - RPN Calculator Pro screenshot 2

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.

More apps like RPN

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

Calculator: Basic + Scientific

Simple & Scientific Calculator

MB-88F Fractional Calculator

Exact RPN fraction calculator

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

Calculator Ultra: Smart Math

by phakin chatngamapichat