Best Hp Calculator Apps

249+ iOS apps curated and reviewed

4.3 avg rating
17 free apps
Updated August 2026

Looking for free hp calculator apps? 17 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Hp Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1iHP48iHP48Free4.7★ (270)NoNoAug 2026
2Retro 15CRetro 15CFree4.3★ (212)NoNoJul 2026
3HP-35HP-35Free5.0★ (5)NoNoAug 2026
4i48i48Free3.5★ (196)NoNoAug 2026
5HP 12c Financial CalculatorHP 12c Financial Calculator$14.994.3★ (325)NoNoAug 2026
6Free42Free42Free4.8★ (283)NoNoAug 2026
7HP 15c CalculatorHP 15c Calculator$14.994.8★ (207)NoNoAug 2026
8my41CXmy41CXFree5.0★ (2)NoYesAug 2026

Top Picks for Hp Calculator

iHP48#1

iHP48 by Alexis Lorca

The classic HP48 improved
Editor's Choice
📊 Productivity
4.7😊(270 ratings)
Free
iHP48 screenshot 1
iHP48 screenshot 2
iHP48 screenshot 3
iHP48 screenshot 4
iHP48 screenshot 5

This app brings the powerful HP48 calculator experience to your mobile device. It offers enhanced performance, seamless file management, and a customizable interface with support for various HP calculator models. Enjoy a familiar and convenient calculator solution without needing extra hardware.

What We Love

  • 🚀 Excellent emulation of HP48
  • 👍 Familiar and nostalgic feel
  • 👍 Comprehensive functionality
  • 👍 Customizable skins

Room to Improve

  • 🐛 Occasional crashes or freezes
  • 🐛 Missed keystrokes when typing quickly
  • 🐛 Blank or flickering display
Retro 15C#2

Retro 15C by Greg Hewgill

Strong Contender
🔧 Utilities
4.3😊(212 ratings)
Free
Retro 15C screenshot 1
Retro 15C screenshot 2

This app emulates a classic RPN scientific calculator, offering advanced features like complex number arithmetic, matrix calculations, and programmability. It provides a functional and complex tool reminiscent of 1980s calculators.

What We Love

  • 🚀 Lightning-fast calculator
  • 👍 Authentic look and feel of HP 15C
  • 🚀 Faster than real HP 15C
  • 👍 Excellent RPN emulation

Room to Improve

  • 🐛 Doesn't save settings, programs, or memory
  • 🐛 No key press feedback or sound
  • 🐛 Blinking display issue with large calculations
HP-35#3

HP-35 by Enrique Haro

RPN Calculator. HP-35, 45, 21
Worth Considering
🔧 Utilities
5.0(5 ratings)
Free
HP-35 screenshot 1
HP-35 screenshot 2
HP-35 screenshot 3
HP-35 screenshot 4
HP-35 screenshot 5

Emulates classic Hewlett Packard RPN scientific calculators from the 1970s. Experience the original HP-35, HP-45, and HP-21 models on your iPhone.

More Hp Calculator apps to explore

4
i48
i48
i48
by Automagic Software Pty Ltd
Free

This application emulates the HP48GX calculator on your iPhone or iPod touch. It allows you to perform complex calculations like matrix operations and function integration on the go.

HP48GX calculator emulationMatrix calculationsFunction integration
📊 Productivity
(196)
paid
5
HP 12c Financial Calculator
HP 12c Financial Calculator
HP 12c Financial Calculator
by MORAVIA Consulting, spol. s r.o.
$14.99

This app emulates the legendary HP 12c financial calculator with a redesigned interface and modern look. It preserves the precision and reliability trusted by professionals, offering built-in financial tools for business, banking, real estate, and education.

Official HP 12c emulatorIdentical algorithms and layoutRPN input
💰 Finance
(325)
paid
6
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
(283)
free
7
HP 15c Calculator
HP 15c Calculator
HP 15c Calculator
Official emulator of HP 15c
$14.99

Experience the official emulator of the legendary HP 15c scientific calculator. This app offers a redesigned interface and modern look while preserving the precision and reliability of the original. It features RPN input, matrix calculations, complex functions, and numerical integration for professionals and students.

Official HP 15c emulatorRPN (Reverse Polish Notation)Matrix calculations
🔧 Utilities
(207)
paid
8
my41CX
my41CX
my41CX
HP-41 Microcode Emulator
Free

Experience the most accurate HP-41CX calculator emulation. This app provides full microcode-level emulation of the original NUT processor, ensuring 100% hardware-accurate behavior. It features a modern interface, expandable ROM modules, and built-in documentation for a classic yet contemporary user experience.

True microcode emulationModern user interfaceExpandable with ROM modules
🔧 Utilities
(2)
free with in-app purchases
9
HP Prime Lite
HP Prime Lite
HP Prime Lite
Lite Graphing Calculator
Free

This app provides advanced graphing calculator functionality on your mobile device. It offers features for solving equations, exploring mathematical concepts, and is ideal for students in secondary and collegiate math courses. Enjoy a familiar layout with powerful tools for problem-solving.

Advanced graphing of equations and inequalitiesSolve single and systems of equationsHundreds of mathematical functions
📚 Education
(41)
free
10
Touch RPN calc
Touch RPN calc
Touch RPN calc
Financial/Sci RPN calculator
Free

This app offers a powerful RPN calculator with financial and scientific functions, mimicking popular industry-standard models. It includes programming capabilities and expandable flavors for diverse calculation needs.

RPN financial calculatorRPN scientific calculatorProgramming functions
💰 Finance
(208)
free with in-app purchases
11
Calculator: EasyCalc
Calculator: EasyCalc
Calculator: EasyCalc
Smart Calculator & Converter
Free
🔧 Utilities
(0)
12
Inseries: Smart Calculator
Inseries: Smart Calculator
Inseries: Smart Calculator
Financial & Scientific
Free
💰 Finance
(0)
13
Calculator - Pad Edition
Calculator - Pad Edition
Calculator - Pad Edition
Fulfill the missing calculator
Free

This app provides a comprehensive calculator experience, filling the gap for a built-in option on iPads. It offers basic, scientific, fraction, programmer, and tip calculations, along with unit and currency conversion. The interface is designed with a modern flat UI, supporting various orientations and multitasking features.

Basic and scientific calculationsFraction and programmer calculatorsUnit and currency converter
🔧 Utilities
(353K)
free with in-app purchases
14
R47 RPN Calculator
R47 RPN Calculator
R47 RPN Calculator
HP Program Editor & Tutorials
Free

This scientific calculator uses Reverse Polish Notation (RPN) to help you break down complex problems. It offers a full 47-series instruction set with advanced functions and a program editor. The free version includes extensive tutorials and documentation.

RPN scientific calculator47-series instruction setProgram editor
📚 Education
(23)
freemium
15
BRISTOL - Calculator
BRISTOL - Calculator
BRISTOL - Calculator
Calculator: Basic & Scientific
Free
🔧 Utilities
(0)
16
HP15C: Scientific Calculator
HP15C: Scientific Calculator
HP15C: Scientific Calculator
Classic Science Calc for you
$4.99

Relive the classic computing experience with a vintage scientific calculator. This app emulates a beloved 90s model, offering a nostalgic and functional tool for calculations.

Vintage scientific calculator emulationClassic 90s designFunctional for scientific calculations
🔧 Utilities
(3)
paid
17
Calciq - Smart Calculator
Calciq - Smart Calculator
Calciq - Smart Calculator
Smart calculator for everyday
Free

This app allows you to perform calculations by simply typing questions in plain English, without needing to select modes. It handles everyday math, finance, developer calculations, and scientific functions, acting as a running scratchpad for continuous calculations. It also offers live currency conversion and can fall back to AI for complex queries.

Natural language inputAutomatic mode detectionRunning scratchpad functionality
🔧 Utilities
(2)
free
18
Numeri - Notepad Calculator
Numeri - Notepad Calculator
Numeri - Notepad Calculator
Most natural way to calculate
Free
🔧 Utilities
(0)
19
Calculator - Editable History
Calculator - Editable History
Calculator - Editable History
Edit History, Tax & Reference
Free
🔧 Utilities
(0)
20
Calculator Ultra: Smart Math
Calculator Ultra: Smart Math
Calculator Ultra: Smart Math
by phakin chatngamapichat
Free
🔧 Utilities
(0)

FAQ about Hp Calculator

What are the best hp calculator apps for iPhone?
iHP48 tops our hp calculator apps ranking as of August 2026, with a 4.7-star average from 270 App Store ratings, and it's free to download.
Yes — 17 of the top hp calculator apps we rank are free to download, including iHP48 and Retro 15C.
iHP48 has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 249+ hp calculator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
iHP48 is a mobile application that revives the classic HP48 calculator experience. It provides enhanced performance and convenience, allowing users to access powerful calculator functions directly on their device without needing a physical calculator.
Key features include support for multiple HP calculator models (HP38, HP39, HP48, HP49, HP50), enhanced user experience with haptic feedback and zoom options, seamless file management for transferring and accessing calculator objects, and access to a comprehensive library of calculator packages and ROMs.

Related searches