Best Programmable Calculator Apps

38+ iOS apps curated and reviewed

4.8 avg rating
11 free apps
Updated June 2026

Function Calc is the household name in programmable calculator, but it's far from the only option. We track 38+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Programmable Calculator

Function Calc#1

Function Calc by Hugh Pelham

fully programmable calculator
Editor's Choice
📊 Productivity
5.0(2 ratings)
Free
Function Calc screenshot 1
Function Calc screenshot 2
Function Calc screenshot 3
Function Calc screenshot 4
Function Calc screenshot 5
Function Calc screenshot 6

This app offers a powerful, programmable scientific calculator with graphing capabilities. It allows users to create custom functions, store equations, and perform complex calculations with ease. The interface features a visible tape display and supports dictation for statistical analysis.

CALC 1 Programmable Calculator#2

CALC 1 Programmable Calculator by CalcFxC, LLC

JavaScript Powered
Strong Contender
🔧 Utilities
4.6(9 ratings)
$9.99
CALC 1 Programmable Calculator screenshot 1
CALC 1 Programmable Calculator screenshot 2
CALC 1 Programmable Calculator screenshot 3
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CALC 1 Programmable Calculator screenshot 5
CALC 1 Programmable Calculator screenshot 6

Create custom calculators with AI-generated JavaScript functions for precise calculations and data visualization. Assign programs to keys and manage data efficiently. Offers multiple calculation modes and extensive documentation.

Converter+ (Units, Currencies)#3

Converter+ (Units, Currencies) by TranCreative Software

Unit and Currency Converter
Worth Considering
📊 Productivity
4.7😊(2.3K ratings)
FreeIn-App Purchases
Converter+ (Units, Currencies) screenshot 1
Converter+ (Units, Currencies) screenshot 2
Converter+ (Units, Currencies) screenshot 3
Converter+ (Units, Currencies) screenshot 4
Converter+ (Units, Currencies) screenshot 5

This app offers a comprehensive unit and currency converter with a vast array of categories and calculators for everyday needs. It allows users to customize templates, download shared ones, and provides automatic exchange rate updates for 167 world currencies.

What We Love

  • 🚀 Excellent converter
  • 👍 Customizable and easy to use
  • 🚀 Comprehensive and versatile
  • 👍 Simple and intuitive interface

Room to Improve

  • 🐛 Currency conversion rates not up-to-date
  • 🐛 Clipboard data access concerns
  • 🐛 Ads can be intrusive

More Programmable Calculator apps to explore

4
Free42
Free42
Free42
HP-42S Calculator Simulator
Free

This application is a faithful re-implementation of the HP-42S scientific calculator and its associated printer. It offers full functionality without requiring original HP ROM images and is an open-source project.

HP-42S calculator simulationHP-82240 printer simulationOpen source project
🔧 Utilities
(278)
free
5
Command-Line Calculator
Command-Line Calculator
Command-Line Calculator
Calculator with History
Free

This app offers a command-line interface for performing complex calculations, including chained operations, variable assignments, and advanced mathematical functions. It supports various number bases, constants, and provides a built-in help system for ease of use.

Command-line interfaceChained calculationsVariable assignment
🔧 Utilities
(5)
free
6
GOTO-100
GOTO-100
GOTO-100
Programmable Calculator
Free

This utility app emulates a programmable calculator using a BASIC language compatible with the PB-100. Users can run programs designed for older calculator models.

Programmable calculator emulationBASIC programming language supportPB-100 compatibility
🔧 Utilities
(4)
free
7
Eureka Calculator
Eureka Calculator
Eureka Calculator
by Tomas Crespo
Free

This app is a mobile mathematical programming environment that brings advanced computing power and flexibility to your device. It features a natural symbolic language and an intuitive interface for efficient formula writing and programming.

Advanced mathematical functionsCustomizable interfaceNatural symbolic language (Magic)
📚 Education
(1)
free with in-app purchases
8
BRISTOL - Calculator
BRISTOL - Calculator
BRISTOL - Calculator
Calculator: Basic & Scientific
Free
🔧 Utilities
(0)
9
PROG_CALC
PROG_CALC
PROG_CALC
programmable calculator
Free

This app offers a programmable calculator with two distinct modes for daily computing and advanced mathematical functions. It supports system conversions between binary, octal, decimal, and hexadecimal, and allows for variable storage and code sharing.

Basic and advanced calculation modesSyntax parserVariable storage and editing
🔧 Utilities
(1)
free
10
RPN-65 SD
RPN-65 SD
RPN-65 SD
First programmable calculator!
$2.99

Experience a faithful simulation of the groundbreaking HP-65 programmable calculator on your iPhone. This app offers virtual program and data cards, a paper tape printer, and a robust card manager. Explore four distinct operating modes, including an enhanced "Super-65" option.

Virtual program and data cardsVirtual paper tape printer with AirPrintDatabase-driven card manager
📊 Productivity
(8)
paid
11
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
(100)
paid
12
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
13
Converter Plus [paid]
Converter Plus [paid]
Converter Plus [paid]
Unit and Currency Converter
$1.99

This app offers a comprehensive unit and currency converter with a vast array of categories and calculators for everyday financial and scientific needs. It allows users to customize templates, download shared ones, and automatically refreshes currency exchange rates.

Extensive unit and currency conversionMultiple calculators (mortgage, loan, tip)Customizable and downloadable templates
🔧 Utilities
(196)
paid
14
PyCalc
PyCalc
PyCalc
Calculate better with Python
Free

This app offers a revolutionary approach to mobile calculations, allowing users to view and edit entire equations at once. It leverages the power of Python 3.11.1 for advanced functions, symbolic math, and financial analysis, making complex computations accessible on the go.

Real-time editable calculation viewPython 3.11.1 interpreterProgrammable scientific calculator
🔧 Utilities
(15)
free
15
RPN-67 SD
RPN-67 SD
RPN-67 SD
Vintage Programmable Calc
$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.

Virtual program and data cardsVirtual paper tape printerDatabase-driven card manager
🔧 Utilities
(16)
paid
16
i41CX
i41CX
i41CX
RPN Calc
$7.99

This app offers a powerful RPN scientific calculator experience, functionally equivalent to a renowned model. It provides extensive memory registers, over 300 built-in functions, and programmability. Advanced features can be unlocked via in-app purchases.

RPN logic with 4-element stack319 main and 124 extended memory registersOver 300 built-in functions
📊 Productivity
(43)
free with in-app purchases
17
ANY Calculator
ANY Calculator
ANY Calculator
Design and use any calculator
Free

Design and use custom calculators from photos or drawings. Personalize keys, functions, and themes for basic math, scientific, or programmable needs. Includes a history log and a matching game for kids.

Create calculators from photos or drawingsCustomizable buttons and functionsPersonalize keys and display
📊 Productivity
(1)
free with in-app purchases
18
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
19
RPN-25 CE
RPN-25 CE
RPN-25 CE
Highly popular 1975 calculator
$2.99

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.

Photo-realistic simulationProgrammable (99/999 steps)15 user-defined function keys
🔧 Utilities
(9)
paid
20
RPN-32 CE
RPN-32 CE
RPN-32 CE
Great classic calculator
$1.99

This app is a photo-realistic simulation of a classic scientific calculator, offering advanced programming capabilities beyond the original model. It includes a comprehensive set of mathematical functions and features for easy program management and sharing.

Photo-realistic calculator simulationFully programmable with 99 stepsExtensive scientific and statistical functions
📊 Productivity
(8)
paid