This app is a photo-realistic simulation of the classic HP-25 scientific calculator. It offers advanced programming features, a vast function library, and modern enhancements for enhanced usability on iOS devices.
4.6(9 ratings)
$2.99
Best apps like GO-29 SciRPN
10+ similar apps compared and reviewed
4.9 avg rating
2 free apps
Updated July 2026
Whether you want more options like GO or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.
Top Alternatives to GO
4.6(17 ratings)
$3.99
This app simulates a vintage programmable calculator from the mid-70s, offering enhanced features beyond the original. It allows users to run existing programs, manage virtual cards, and utilize advanced functions for scientific and engineering tasks.
Halcyon Calc by Halcyon Touch Software
Worth Considering
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4.9(17 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.
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RPN-97 Pro
Vintage Desktop Calculator
$4.99
This app simulates a legendary 1970s programmable calculator, offering advanced features for scientists and engineers. It allows users to run programs, manage virtual cards, and access hundreds of free program cards from its website.
Virtual program and data cardsVirtual paper tape printerDatabase-driven card manager
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RCL-57
by Paul Novaes
Free
This app faithfully recreates the TI-57 programmable calculator, offering its full scientific functions and programming capabilities. It includes a user manual, sample programs, and features like turbo speed and alphanumeric display.
TI-57 recreationScientific functionsProgramming capabilities
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x36
An old-school calculator.
$0.99
This app offers a powerful scientific and engineering calculator with advanced features like programmability, multiple number bases, and statistical functions. It emulates the functionality of calculators from the 70s and 80s, providing over 100 functions for complex calculations.
Programmability with 1000 stepsTrigonometric functions with selectable unitsStatistical functions and linear regression
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paid7
AutoMathic
The Smart Calculator
$1.99
This smart calculator automates complex math problems by translating conversational input into solvable equations. It offers three modes: scripted calculations, manual expression entry, and free-form English input for problem-solving.
Automated problem solvingConversational input translationScripted calculations
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paid8
Glink
Terminal Emulator
$37.99
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HP-35
RPN Calculator. HP-35, 45, 21
Free
Emulates classic Hewlett Packard RPN scientific calculators from the 1970s. Experience the original HP-35, HP-45, and HP-21 models on your iPhone.
RPN calculator emulationHP-35 modelHP-45 model
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(5)
free10
Plus42
Enhanced HP-42S Calc Simulator
$9.99
This advanced scientific calculator simulates the classic HP-42S RPN calculator with enhanced features. It offers algebraic expressions, unit conversions, directories for storage, a larger resizable display, financial functions, and 2D plotting with integral and root finding.
HP-42S RPN calculator simulationAlgebraic expressionsAttached units and conversions
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free