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Best Hp Calculator 12C Apps

248+ iOS apps curated and reviewed

4.0 avg rating
14 free apps
Updated August 2026

The best hp calculator 12c apps on iPhone average 4.0β˜… across 248+ titles β€” we've ranked them by what real users actually keep on their phones. Updated August 2026.

Compare top Hp Calculator 12C Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Retro 15CRetro 15CFree4.3β˜… (212)NoNoJul 2026
2Touch RPN calcTouch RPN calcFree3.4β˜… (208)YesYesAug 2026
3HP 12c Financial CalculatorHP 12c Financial Calculator$14.994.3β˜… (325)NoNoAug 2026
4RLM-12CXRLM-12CXFree4.5β˜… (18)NoYesJul 2026
5HP 12C Platinum CalculatorHP 12C Platinum Calculator$16.991.6β˜… (350)NoNoAug 2026
6Vicinno Financial CalculatorVicinno Financial Calculator$5.994.2β˜… (1.2K)NoNoAug 2026
712C - Modern12C - ModernFree3.1β˜… (10)NoYesAug 2026
8HP 15c CalculatorHP 15c Calculator$14.994.8β˜… (207)NoNoAug 2026

Top Picks for Hp Calculator 12C

Retro 15C#1

Retro 15C by Greg Hewgill

Editor's Choice
πŸ”§ 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

  • πŸš€ Lightning-fast calculator
  • πŸ‘ Authentic look and feel of HP 15C
  • πŸš€ Faster than real HP 15C
  • πŸ‘ Excellent RPN emulation

Room to Improve

  • πŸ› Doesn't save settings, programs, or memory
  • πŸ› No key press feedback or sound
  • πŸ› Blinking display issue with large calculations
Touch RPN calc#2

Touch RPN calc by Elvis Pfutzenreuter

Financial/Sci RPN calculator
Strong Contender
πŸ’° Finance
3.4😊(208 ratings)
FreeAdsIn-App Purchases
Touch RPN calc screenshot 1
Touch RPN calc screenshot 2
Touch RPN calc screenshot 3
Touch RPN calc screenshot 4
Touch RPN calc screenshot 5
Touch RPN calc screenshot 6

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.

What We Love

  • πŸš€ Excellent HP calculator emulation
  • πŸ‘ Looks and works like the real thing
  • πŸ‘ Portrait and landscape modes
  • πŸ‘ Paid version is ad-free

Room to Improve

  • πŸ› Ads in free version
  • πŸ› Ads appearing in paid version
  • πŸ› Incorrect calculations
HP 12c Financial Calculator#3

HP 12c Financial Calculator by MORAVIA Consulting, spol. s r.o.

Worth Considering
πŸ’° Finance
4.3😊(325 ratings)
$14.99
#4in Finance
HP 12c Financial Calculator screenshot 1
HP 12c Financial Calculator screenshot 2
HP 12c Financial Calculator screenshot 3
HP 12c Financial Calculator screenshot 4

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.

What We Love

  • πŸš€ Modern Convenience of a Classic
  • πŸš€ Made me Money
  • πŸš€ Perfect
  • πŸš€ Greatest of all times!

Room to Improve

  • πŸ› Don't fix what's not broken
  • πŸ› In decline
  • πŸ› Step backward

More Hp Calculator 12C apps to explore

4
RLM-12CX
RLM-12CX
RLM-12CX
Finance & Business Calculator
Free

This app is a powerful financial and business calculator designed for iOS devices, replicating the functionality of the HP-12C with expanded features. It offers comprehensive tools for finance, business calculations, statistics, scientific functions, and unit conversions.

Finance and business calculationsAmortization schedulesBond price and yield calculations
πŸ’° Finance
(18)
free with in-app purchases
5
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
πŸ’° Finance
(350)
paid
6
Vicinno Financial Calculator
Vicinno Financial Calculator
Vicinno Financial Calculator
HP 12C emulator
$5.99

This app emulates the functionality of the HP 12C Financial Calculator, offering all its features and more for mobile devices. It provides a reliable and convenient way to perform complex financial calculations on the go.

HP 12C emulatorTime value of money (TVM)Cash flow analysis (NPV, IRR)
πŸ’° Finance
(1.2K)
paid
7
12C - Modern
12C - Modern
12C - Modern
Financial Calculator
Free

This app replicates the functionality of a classic financial calculator, offering modern enhancements like interactive prompts and register views. It provides basic calculator, math, percentage, calendar, and memory functions for free, with advanced financial tools available via a one-time purchase.

HP 12c functionality reimplementationInteractive prompts and recipesRegister views for data inspection
πŸ’° Finance
(10)
free with in-app purchases
8
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
πŸ”§ Utilities
(207)
paid
9
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
πŸ“Š Productivity
(270)
free
10
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)
πŸ”§ Utilities
(2)
free
11
11C Scientific Calculator
11C Scientific Calculator
11C Scientific Calculator
HP 11C emulator
$5.99

This app accurately emulates the classic HP 11C RPN scientific programmable calculator. It replicates the original's Reverse Polish Notation entry system and supports a wide range of mathematical functions, including advanced statistical and trigonometric operations.

RPN entry systemProgrammable functionsHyperbolic trig functions
πŸ”§ Utilities
(298)
paid
12
Calculator #
Calculator #
Calculator #
Scientific Calculator
Free

This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

Math Photos SolverHandwriting RecognitionAI Math Problem Solver
πŸ”§ Utilities
(36K)
free with in-app purchases
13
12C Platinum Calculator
12C Platinum Calculator
12C Platinum Calculator
12C Platinum Calculator
Free
$0.99 | 100% OFF

This financial calculator offers over 120 built-in functions for complex calculations like IRR and NPV. It supports RPN entry, programming custom keystrokes, and includes features for loan payments, interest rate conversions, bond pricing, and statistical analysis.

120+ built-in financial functionsRPN keystroke entryProgrammable keystrokes (up to 99)
πŸ”§ Utilities
(1)
free
14
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
πŸ”§ Utilities
(283)
free
15
Nova Calc: Smart Calculator
Nova Calc: Smart Calculator
Nova Calc: Smart Calculator
Clean, Fast & No Ads
Free
πŸ”§ Utilities
(0)
16
Calculator: EasyCalc
Calculator: EasyCalc
Calculator: EasyCalc
Smart Calculator & Converter
Free
πŸ”§ Utilities
(0)
17
Calculator HD Pro Lite
Calculator HD Pro Lite
Calculator HD Pro Lite
Basic & Scientific Calc
Free

This app offers a user-friendly calculator with large buttons and extensive customization options. It features a dual-line display to see input and results simultaneously, saves your calculation history, and provides full scientific functions. Personalize layouts, themes, and even button symbols to suit your needs.

Dual-line displayCalculation historyFull scientific functions
πŸ”§ Utilities
(51K)
ad-supported
18
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
πŸ”§ Utilities
(3)
paid
19
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
πŸ”§ Utilities
(1)
ad-supported
20
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
πŸ”§ Utilities
(1)
free

FAQ about Hp Calculator 12C

What are the best hp calculator 12c apps for iPhone?
Retro 15C tops our hp calculator 12c apps ranking as of August 2026, with a 4.3-star average from 212 App Store ratings, and it's free to download.
Yes β€” 14 of the top hp calculator 12c apps we rank are free to download, including Retro 15C and Touch RPN calc.
Retro 15C has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 248+ hp calculator 12c 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.