Best apps like DB40X

10+ similar apps compared and reviewed

4.7 avg rating
7 free apps
Updated October 2026

DB40X 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
4.0(62 ratings)
Free
KobCard screenshot 1
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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 DB40X

4.7(28 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.

RPN-70 SD#2

RPN-70 SD by CuVee Software

Very rare vintage calculator
Strong Contender
📊 Productivity
4.7(11 ratings)
Free
RPN-70 SD screenshot 1
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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.

RLM-15CX#3

RLM-15CX by R.L.M. Software

Advance Scientific Calculator
Worth Considering
📊 Productivity
4.1(17 ratings)
FreeIn-App Purchases
RLM-15CX screenshot 1
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This advanced scientific calculator emulates the functionality of the HP-15C, offering comprehensive tools for finance, business, statistics, and scientific calculations. It supports programming, equation solving, and unit conversions, optimized for iOS devices.

More apps like DB40X

4
WP 31s
WP 31s
WP 31s
by Pascal Meheut
Free

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.

RPN scientific calculator emulationRich function setSimplified, less cluttered keyboard
📊 Productivity
(15)
free
5
RPN-67 NP
RPN-67 NP
RPN-67 NP
Legendary Calculator
Free

This app simulates a legendary vintage scientific calculator, offering a "live" display of its internal states and a virtual paper tape printer. It allows loading and running original sample programs, with advanced features that can be switched off for an authentic experience.

Live display of stack and registersVirtual paper tape printerEmail or print paper tape
📊 Productivity
(3)
free
6
RPN-55 SD
RPN-55 SD
RPN-55 SD
Classic HP Calculator w/Timer
$1.99

This app is a photo-realistic simulation of a classic Hewlett-Packard programmable scientific calculator from the 1970s. It includes a 100-hour digital timer, clock functions, and original HP programs.

Photo-realistic look-and-feelProgrammable with conditional branching100-hr timer and 12/24-hr clock
📊 Productivity
(8)
paid
7
RPN-34 CE
RPN-34 CE
RPN-34 CE
Legendary classic calculator
$1.99

This app simulates a legendary scientific calculator, offering photo-realistic visuals and advanced functions like integration and root finding. It includes built-in programs and extensions for enhanced usability, making it a powerful tool for complex calculations.

Photo-realistic look-and-feelProgrammable with 999 stepsIntegration and root solving
📊 Productivity
(14)
paid
8
i41CX+
i41CX+
i41CX+
RPN Calc with Printer and CAS
$24.99

This advanced RPN scientific calculator offers workstation-class Computer Algebra System (CAS) capabilities, going beyond traditional replicas. It provides access to an extensive library of modules and programs, enhanced with iOS features, customizable skins, and iCloud support for seamless data management.

RPN logic with 4-element stackExtensive memory registersOver 400 built-in functions
📊 Productivity
(107)
paid
9
RPN-70 HD
RPN-70 HD
RPN-70 HD
Very rare vintage calculator
Free

This app provides a photo-realistic simulation of a rare 1974 financial calculator, offering full functionality for loan amortization, saving plans, and depreciation. It features an authentic design with animated keys and an optional live register view.

Photo-realistic designLive register viewAnimated keys with sound
📊 Productivity
(3)
free
10
Calc-U-59
Calc-U-59
Calc-U-59
Calc-U-59 Calculator Emulation
Free

Explore the inner workings of classic TI-59, TI-58, and TI-58C calculators. This tool offers cycle-accurate emulation, a debugger to inspect code and registers, and a functional paper tape printer recreation. Load and save programs using magnetic card emulation and state files.

Cycle-accurate TMC0501 processor emulationIntegrated debugger for program and register inspectionFunctional PC-100C paper tape printer recreation
📊 Productivity
(1)
free