Best RPN alternatives: apps like RPN-67 Pro

10+ similar apps compared and reviewed

4.5 avg rating
6 free apps
Updated November 2026

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.

KobCard

KobCard by KOB MARKETING

Gift Card Information Platform
4.1(392 ratings)
Free
KobCard screenshot 1
KobCard screenshot 2
KobCard screenshot 3
KobCard screenshot 4

KobCard is a comprehensive gift card information platform that offers real-time exchange rates, price calculations, and the latest news on gift cards. It serves as a one-stop destination for individuals looking to buy, sell, or stay informed about the world of gift cards.

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Top Alternatives to RPN

DB48X#1

DB48X by Christophe de Dinechin

Spirit of the HP48, revived
Editor's Choice
📊 Productivity
4.2(6 ratings)
$4.99
DB48X screenshot 1
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This advanced scientific calculator offers arbitrary precision computations, RPN and algebraic operations, and extensive graphing capabilities. It supports complex numbers, matrices, symbolic calculations, and over 1000 built-in functions, inspired by the HP48 series.

4.9(15 ratings)
Free
WP 31s screenshot 1

This app emulates a classic RPN scientific calculator, offering a rich function set for daily use with a simplified interface. It's based on the more complex WP 34s but is designed for easier operation.

4.7(29 ratings)
Free
WP 34s screenshot 1

This app is a powerful RPN scientific calculator with extensive functions for mathematics, statistics, programming, and engineering. It includes programmer functions, fraction mode, probability distributions, and a stopwatch, offering a comprehensive tool for complex calculations.

More apps like RPN

4
DB50X
DB50X
DB50X
Color version of DB48X
$9.99

This scientific calculator offers high-precision computations with arbitrary precision for numbers. It supports advanced functions like complex numbers, matrices, symbolic calculations, and graphing, with a user-friendly interface and extensive built-in help.

Arbitrary precision calculationsRPN and algebraic operationsComplex numbers, vectors, matrices
📊 Productivity
(9)
paid
5
i41CX+
i41CX+
i41CX+
RPN Calc with Printer and CAS
$24.99

This advanced RPN calculator offers workstation-class CAS capabilities, emulating the HP-41CX with extensive module support. It features a virtual thermal printer/plotter, full-screen text editor, and integrates with iOS hardware for enhanced functionality.

RPN logic with 4-element stackVirtual thermal printer/plotterWorkstation-class Computer Algebra System (CAS)
📊 Productivity
(108)
paid
6
Janus Calculator
Janus Calculator
Janus Calculator
by Geoffrey Domm
Free

This app offers a unique dual-calculator interface, supporting both standard and Reverse Polish Notation. It features programmable functions, extensive scientific and financial tools, and includes physical constants and an advanced option calculator.

Dual calculator interface (Standard and RPN)Programmable functionsFinance and scientific functions
📊 Productivity
(1)
free
7
Fairy PDF Reader
Fairy PDF Reader
Fairy PDF Reader
A Full PDF Reading Experience
$2.99
$4.99 | 40% OFF

This app offers a comprehensive PDF reading experience on iOS devices, mimicking desktop functionality. It includes advanced features like keyboard support, smart zoom, dark mode, and translation saving to enhance document interaction and learning.

Full keyboard supportSmart zoom & lockDark mode with color inversion
📊 Productivity
(3)
paid
8
RowSwift: Data Explorer
RowSwift: Data Explorer
RowSwift: Data Explorer
Quick CSV Stats & Charts
Free

Analyze and visualize CSV data directly on your device. Inspect file structures, summarize columns with statistical insights, and create various chart types. Filter large datasets and export charts as PNGs.

CSV file import from various sourcesColumn summarization with statisticsMultiple chart visualization types
📊 Productivity
(1)
free
9
Calc-U-59
Calc-U-59
Calc-U-59
Calc-U-59 Calculator Emulation
Free

This app emulates the classic TI-59, TI-58, and TI-58C calculators with cycle-accurate precision. It includes features like a virtual magnetic card reader, a PC-100C printer, and a CPU-level debugger for in-depth analysis. Explore old programs or learn how these vintage machines operated.

Cycle-accurate TI-59, TI-58, TI-58C emulationVirtual magnetic card readerPC-100C printer emulation
📊 Productivity
(2)
free
10
DB40X
DB40X
DB40X
High-precision RPL calculator
Free

A high-precision scientific calculator inspired by the HP48 series, offering arbitrary precision computations, complex numbers, vectors, matrices, and graphing. It supports RPN and algebraic operations, with over 1000 built-in functions and a hyperlinked help system.

Arbitrary precision computationsRPN and algebraic operationsComplex numbers, vectors, and matrices
📊 Productivity
(7)
free