Best Hp Calculator 12C Apps

208+ iOS apps curated and reviewed

4.5 avg rating
12 free apps
Updated April 2026

The best hp calculator 12c apps on iPhone average 4.5β˜… across 208+ titles β€” we've ranked them by what real users actually keep on their phones. Updated April 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

Experience the perfect balance of functionality and complexity with a free scientific calculator app inspired by classic RPN calculators from the 1980s. Includes advanced features like complex number arithmetic, matrix calculations, numerical root finder, statistical functions, and more!

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
4.2😊(277 ratings)
$14.99
#13in 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

Access an authentic financial calculator app developed by Hewlett Packard, providing essential functions like loan payment calculations, TVM, NPV, and more on your iPhone, iPad, or iPod Touch. Keep the power of the HP 12c handy for business, real estate, banking, and finance needs.

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
Touch RPN calc#3

Touch RPN calc by Elvis Pfutzenreuter

Financial/Sci RPN calculator
Worth Considering
πŸ’° Finance
3.4😊(206 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

Experience the ultimate financial and scientific RPN calculator with programming functions similar to HP-12C and scientific functions reminiscent of HP-11C. Unlock additional flavors like 10C and 16C within the app.

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

More Hp Calculator 12C apps to explore

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

This finance and business calculator is a comprehensive tool that offers a wide range of functions, including financial, business, and scientific calculations, with features such as amortization, bond pricing, and currency exchange. Try it out with a 30-day free trial and subscribe for continued access to its extensive set of menus and worksheets.

πŸ’° Finance
(18)
5
iHP48
iHP48
iHP48
The classic HP48 improved
Free

Introducing iHP48 - The ultimate calculator companion for students and engineers, seamlessly bringing back the iconic HP48 experience to your iPhone. Enjoy enhanced performance, wide compatibility with HP calculators, seamless file management, and a customizable interface for free. Experience the power of the legendary HP48 reinvented for the modern era. Visit https://www.thinkchile.com/iHP48 for more information.

πŸ“Š Productivity
(270)
6
10bii Financial Calculator
10bii Financial Calculator
10bii Financial Calculator
Easy Financial Calculator
$7.99

A powerful and versatile financial calculator app with over 105 functions for various financial analysis needs, from loan payments to investment values. Perfect for beginners and professionals alike, offering easy-to-use features, intuitive display, and precise mathematics. Answer common financial questions effortlessly with 12 easy modes and visualize cash flows and statistical data with graphs for quick analysis and decision-making.

πŸ’° Finance
(663)
7
JRPN 15C
JRPN 15C
JRPN 15C
by Philip Starner
Free

This scientific calculator simulates a classic model from 1982, replicating its iconic seven-segment display and functionality, and offers advanced features such as complex math, matrices, and numerical integration. Try it out and experience the nostalgia of a retro calculator with modern capabilities.

πŸ“Š Productivity
(5)
8
Vicinno Financial Calculator
Vicinno Financial Calculator
Vicinno Financial Calculator
HP 12C emulator
$5.99

A top-rated HP 12C Financial Calculator emulator app on iOS with all the functions of the original calculator, including TVM, NPV, IRR, amortization, statistical analysis, and more. Enjoy a user-friendly experience, quick access help, online support, and customization options. Email support@vicinno.com for assistance. Visit www.facebook.com/vicinno & www.twitter.com/vicinno for updates.

πŸ’° Finance
(1.2K)
9
10BII Calc HD
10BII Calc HD
10BII Calc HD
by Ernest Brock
$8.99

A versatile business calculator with over 100 functions for finance, math, and stats. Calculate loans, interest, cash flows, and more with ease on both iPhone and iPad. Perfect for business professionals and students alike.

πŸ’° Finance
(3.5K)
10
12C - Modern
12C - Modern
12C - Modern
Financial Calculator
Free

This financial calculator app offers a modern take on a classic tool, providing basic and advanced functions, including recipes and interactive prompts to simplify calculations. With a one-time purchase, users can unlock additional features, such as Time-Value-of-Money and Statistics functions, and utilize register views and customizable recipes to streamline their workflow.

πŸ’° Finance
(8)
11
Free42
Free42
Free42
HP-42S Calculator Simulator
Free

A calculator simulator app that re-implements the HP-42S calculator without needing its ROM image. Open Source project under GNU GPL v2 license. Engage in precise calculations with ease.

πŸ”§ Utilities
(278)
12
BA Financial Calculator
BA Financial Calculator
BA Financial Calculator
BAII Plus Emulator
Free

This app, developed as a BAII Plus emulator, caters to CFA candidates and charterholders, offering identical functionality to the TI calculator with a user-friendly experience. For support, contact cfa.calculator@gmail.com.

πŸ’° Finance
(2.9K)
13
Calculator #
Calculator #
Calculator #
Scientific Calculator
Free

Calculate complex mathematical equations effortlessly with this intuitive app. Simplify your calculations on the go with advanced features like graph plotting and equation solving. Download now to supercharge your math skills!

πŸ”§ Utilities
(36K)
14
i41CX
i41CX
i41CX
RPN Calc
$7.99

The application is a powerful, programmable RPN (Reverse Polish Notation) scientific calculator that offers a wide range of advanced features, including over 300 built-in functions, time and calendar functions, and the ability to access the entire HP-41 library of solutions. It provides a clean and responsive user interface, with customizable skins and optional features like a mini stack display and Bluetooth keyboard support. The app is designed for users who need a robust programmable calculator but don't require the more advanced capabilities of the i41CX+ model.

πŸ“Š Productivity
(43)
15
The Best Calculator - Calc Pro
The Best Calculator - Calc Pro
The Best Calculator - Calc Pro
10 Powerful Calculators
Free

Experience the ultimate mobile calculator with 10 powerful calculators and financial worksheets, trusted by millions worldwide for its unrivaled accuracy and advanced features. From standard and scientific calculators to unit converters and graphing tools, this app has it all. Get it now for advanced calculations at your fingertips!

πŸ”§ Utilities
(4.6K)
16
HP 15c Calculator
HP 15c Calculator
HP 15c Calculator
Official emulator of HP 15c
$14.99

Embrace the legacy of the iconic HP 15c Scientific Calculator with this authentic app for iOS devices. Experience the original features, algorithms, and RPN functionality ideal for math and engineering professionals.

πŸ”§ Utilities
(168)
17
11C Scientific Calculator
11C Scientific Calculator
11C Scientific Calculator
HP 11C emulator
$5.99

Experience the most accurate HP 11C emulator for iPhone and iPod touch, offering RPN entry system and a wide range of scientific functions, including trigonometry, probability, and more. Unlock precise calculations with this powerful scientific calculator emulator.

πŸ”§ Utilities
(284)
18
12Calc
12Calc
12Calc
by Ernest Brock
$8.99

12Calc is a powerful financial calculator app for iPhone and iPad, featuring blazing-fast and highly accurate calculations, audit tape, unit converter, and interactive worksheets for various financial scenarios. Make complex financial computations with ease and precision.

πŸ’° Finance
(821)
19
Calculator with History +
Calculator with History +
Calculator with History +
No ads & Scientific calculator
Free

A calculator app with a built-in history feature that keeps track of your calculations without any ads. Calculate effortlessly and access your past computations instantly.

πŸ’° Finance
(23K)
20
HP-35
HP-35
HP-35
RPN Calculator. HP-35, 45, 21
Free

This RPN calculator application emulates the classic Hewlett Packard scientific calculators, including the HP-35, HP-45, and HP-21, as well as the Soviet Π­Π›Π•ΠšΠ’Π ΠžΠΠ˜ΠšΠ MK 61, allowing users to experience the functionality of these iconic calculators. Try it out to perform calculations with ease and nostalgia!

πŸ”§ Utilities
(5)