Best RPNu alternatives: apps like RPNu

10+ similar apps compared and reviewed

4.7 avg rating

7 free apps

Updated October 2026

RPNu

Scott Johnson

🔧 Utilities

📊 Productivity

Looking for something like RPNu? 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 RPNu

Construction Calculator+++ by Dogahe

Construction Math Calculator

Editor's Choice

🔧 Utilities

5.0(3 ratings)

$2.99

This app streamlines construction math with modules for length, width, and height calculations, material estimation for bricks and drywall, and complex rafter calculations. It also includes tools for circle and arc parameters, offering detailed visualizations.

Halcyon Calc by Halcyon Touch Software

Strong Contender

🔧 Utilities

4.9(18 ratings)

$4.99

A powerful calculator app for students, engineers, and scientists. It handles complex numbers, symbolic expressions, unit conversions, and matrix operations, with advanced plotting and programming capabilities.

my57 by Miroslav Perovic

Classic calculator emulator

Worth Considering

🔧 Utilities

0.0(0 ratings)

FreeIn-App Purchases

More apps like RPNu

This app faithfully recreates the 1975 HP-21 pocket scientific calculator, offering RPN functionality and a full suite of mathematical, trigonometric, and logarithmic functions. It features a 10-digit LED display, stack and storage registers, and a keystroke log for detailed operation tracking.

RPN (Reverse Polish Notation)10-digit LED calculator displayFour stack registers with roll down

This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.

Reverse Polish Notation (RPN) calculatorUser-programmable functionsJavaScript equation support

by Halcyon Touch Software

Free

This app is a powerful calculator for students and professionals, offering advanced features like symbolic expression manipulation, graphing, and statistical analysis. It supports real, complex, and integer numbers, matrices, and vectors, making it versatile for various mathematical tasks.

Symbolic expression manipulationGraphing of expressionsMatrix and vector calculations

🔧 Utilities

(15)

free with in-app purchases

Compare with RPNu

isPrime?

by Omer Faruk Mesebuken

Computer Math Calculator

Free

This app emulates a classic 1980s computer math calculator, offering decimal arithmetic, binary conversions, and logic functions. It supports parentheses for complex calculations and includes modern features like copy/paste and landscape mode.

Decimal arithmeticBinary conversions (decimal, binary, octal, hexadecimal)Binary logic functions