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Best Hp 15C Calculator Apps

247+ iOS apps curated and reviewed

4.0 avg rating
13 free apps
Updated August 2026

Out of 247+ hp 15c calculator apps on iOS, 13 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Hp 15C Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Retro 15CRetro 15CFree4.3★ (212)NoNoJul 2026
2HP 15c CalculatorHP 15c Calculator$14.994.8★ (207)NoNoAug 2026
3RLM-15CXRLM-15CXFree4.3★ (13)NoYesAug 2026
415C Pro Scientific Calculator15C Pro Scientific Calculator$5.993.8★ (281)NoNoAug 2026
5HP15C: Scientific CalculatorHP15C: Scientific Calculator$4.992.7★ (3)NoNoAug 2026
6Electrical Engineering - liteElectrical Engineering - liteFree4.7★ (252)YesYesAug 2026
7iHP48iHP48Free4.7★ (270)NoNoAug 2026
8HP16CHP16CFree5.0★ (2)NoNoJun 2026

Top Picks for Hp 15C Calculator

Retro 15C#1

Retro 15C by Greg Hewgill

Editor's Choice
🔧 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 15c Calculator#2

HP 15c Calculator by MORAVIA Consulting, spol. s r.o.

Official emulator of HP 15c
Strong Contender
🔧 Utilities
4.8😊(207 ratings)
$14.99
HP 15c Calculator screenshot 1
HP 15c Calculator screenshot 2
HP 15c Calculator screenshot 3
HP 15c Calculator screenshot 4

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.

What We Love

  • 🚀 Excellent emulation of original HP 15C
  • 👍 Faithful reproduction of classic calculator
  • 👍 Includes original manual
  • 👍 Works just like the real thing

Room to Improve

  • 🐛 Display issues in portrait mode
  • 🐛 Bugs with programming and trig functions
  • 🔇 Loud button click sound
RLM-15CX#3

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

Advance Scientific Calculator
Worth Considering
📊 Productivity
4.3(13 ratings)
FreeIn-App Purchases
RLM-15CX screenshot 1
RLM-15CX screenshot 2
RLM-15CX screenshot 3
RLM-15CX screenshot 4
RLM-15CX screenshot 5
RLM-15CX screenshot 6

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 Hp 15C Calculator apps to explore

4
15C Pro Scientific Calculator
15C Pro Scientific Calculator
15C Pro Scientific Calculator
HP 15C emulator
$5.99

This app emulates the HP 15C scientific calculator, offering advanced functions like complex numbers, matrix operations, numerical integration, and root finding. It provides the same capabilities as the original hardware with enhanced performance for your mobile device.

Complex number supportMatrix operationsNumerical integration
🔧 Utilities
(281)
paid
5
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
6
Electrical Engineering - lite
Electrical Engineering - lite
Electrical Engineering - lite
60 calculations with circuits
Free

This app offers a comprehensive suite of electrical calculations and conversions for professionals and students. It handles diverse units and provides precise results for various electrical engineering tasks, including voltage, current, power, and more.

60 Electrical Calculators16 Electrical ConvertersVoltage, Current, Resistance, Power calculations
📚 Education
(252)
free with in-app purchases
7
iHP48
iHP48
iHP48
The classic HP48 improved
Free

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.

Supports HP38, HP39, HP48, HP49, HP50 calculatorsHaptic feedback and customizable zoom optionsSeamless file transfer via iTunes and Files app
📊 Productivity
(270)
free
8
HP16C
HP16C
HP16C
by Michael Doornbos
Free

This app faithfully recreates the legendary HP 16C Computer Scientist calculator, offering advanced hex arithmetic, bit manipulation, and base conversion. It features RPN, keystroke programming, and modern enhancements like a two-line display and haptic feedback.

Full RPN calculatorInteger arithmetic (HEX, DEC, OCT, BIN)Configurable word size (1-64 bits)
🔧 Utilities
(2)
free
9
Nova Calc: Smart Calculator
Nova Calc: Smart Calculator
Nova Calc: Smart Calculator
Clean, Fast & No Ads
Free
🔧 Utilities
(0)
10
Kaipai - Talking Video with AI
Kaipai - Talking Video with AI
Kaipai - Talking Video with AI
AI Templates,AI Cover,HD Cam
Free

Effortlessly create engaging talking videos with AI assistance. This app offers smart editing tools like automatic subtitles, filler word removal, and AI-powered templates to help you produce trendy content quickly, even with no prior experience.

AI-assisted scripting, shooting, and editingAutomatic subtitle generation and filler word removalOne-tap bilingual subtitles
📷 Photo & Video
(412)
free with in-app purchases
11
goRPN
goRPN
goRPN
by Joel Perry
Free

This app emulates the functionality of the HP-16C calculator using a Reverse Polish Notation (RPN) input method. It is a minimal, open-source utility designed for users familiar with RPN calculators.

RPN calculatorHP-16C stack emulationOpen-source software
🔧 Utilities
(1)
free
12
HP41CV
HP41CV
HP41CV
by Jurgen Anton Strohmer
Free

Experience the functionality of a classic 90s pocket calculator on your iPhone. This app offers UPN calculation with a basic course for new users. Many core functions are available for free, with advanced features offered as optional upgrades.

HP-41 CV calculator emulationUPN (Reverse Polish Notation) calculationBasic UPN course with examples
🔧 Utilities
(21)
free
13
Smart - Scientific Calculator
Smart - Scientific Calculator
Smart - Scientific Calculator
by Shreyaskumar Patel
Free

This utility app offers a comprehensive suite of calculators for everyday financial, health, and date-related needs. It includes tools for loans, investments, taxes, health metrics, and unit conversions, along with a math solver.

Basic & Scientific CalculationsLoan & Investment CalculatorsHealth & Date Calculators
🔧 Utilities
(1)
ad-supported
14
SushiJapa Chan
SushiJapa Chan
SushiJapa Chan
by Pablo Reis
Free

Discover everything about SushiJapa Chan and join their loyalty program. Download now to participate and enjoy exclusive benefits.

Loyalty program participationApp informationDownload and join
🍔 Food & Drink
(0)
free
15
GO-29 SciRPN
GO-29 SciRPN
GO-29 SciRPN
by Steve Lidie
$6.99

This app offers a highly accurate simulation of the classic HP-29C programmable scientific calculator. It features RPN input, extensive storage registers, and a wide range of mathematical and statistical functions. Users can program complex calculations, import/export programs, and view detailed program information.

RPN input10-digit LED display simulationFour stack registers
🔧 Utilities
(5)
paid
16
HP 12C Platinum Calculator
HP 12C Platinum Calculator
HP 12C Platinum Calculator
Financial Calculator
$16.99

This app offers the functionality of the industry-standard HP 12c Platinum Financial Calculator on your iPhone or iPod touch. It supports both RPN and algebraic data entry, with editing features like backspace and undo. Perform complex financial calculations for real estate, banking, and more.

RPN and algebraic data entryLoan payments, TVM, NPV, IRR calculationsCashflow and bond calculations
💰 Finance
(350)
paid
17
Crimson Calculator 41cx
Crimson Calculator 41cx
Crimson Calculator 41cx
RPN Emulator
$4.99

This app emulates a programmable RPN calculator with extensive features for advanced calculations. It offers label addressing, conditional branching, and subroutine support for complex programming needs. The alphanumeric display enhances usability for storage and programming.

Programmable RPN calculator emulationAccess to stack and LASTx200-2000 Lines of program memory
📚 Education
(3)
paid
18
Calculatir - Calculator
Calculatir - Calculator
Calculatir - Calculator
Basic, Scientific, Plus Calc
Free
🔧 Utilities
(0)
19
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
20
My Calculator +
My Calculator +
My Calculator +
My Original Calculator
Free
📊 Productivity
(0)

FAQ about Hp 15C Calculator

What are the best hp 15c calculator apps for iPhone?
Retro 15C tops our hp 15c calculator apps ranking as of August 2026, with a 4.3-star average from 212 App Store ratings, and it's free to download.
Yes — 13 of the top hp 15c calculator apps we rank are free to download, including Retro 15C and RLM-15CX.
Retro 15C has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 247+ hp 15c calculator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
The Retro 15C app emulates a classic RPN (Reverse Polish Notation) scientific calculator. It offers a wide range of advanced mathematical functions, including complex number arithmetic, matrix calculations, numerical root finding, and integration.
Key features include complex number arithmetic and trig functions, matrix calculations, a numerical root finder, numerical integration, statistical functions with linear regression, and full programmability. It aims to replicate the functionality of classic 1980s RPN calculators.