Best Retro 15C Apps

Hundreds of pre-built calculation templatesCreate custom calculation templatesStandard and RPN calculator modes

This app offers a powerful calculator with hundreds of pre-built templates for finance, engineering, and more. Users can also create custom calculations for specific needs, ensuring accuracy and speed for repetitive tasks. Access your calculations across devices, online or offline.

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HP-42S Calculator Simulator

Free42

HP-42S calculator simulationHP-82240 printer simulationOpen source project

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.

10bii Financial Calculator

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free

Easy Financial Calculator

$5.99

$7.99 | 25% OFF

This app offers a comprehensive financial calculator with over 105 functions for business, statistics, and general math. It simplifies complex calculations like loan payments, time value of money, and investment analysis with an intuitive interface and visual tools. Easy modes are available for users new to financial calculations.

Over 105 financial, business, and math functionsTime Value of Money (TVM) calculationsUneven Cashflow worksheets

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Vintage Film Camera: Retro Art

Your video, time-slipped

Retro-style video recordingAnalog film effects (dirt, noise, frameshifting)Burning and Film End effects

Create vintage-style videos with a single tap, simulating the look and feel of old film reels. This app offers unique analog effects, mechanical sounds, and simple operation for a retro filming experience. Extend video length and unlock advanced features with a PRO upgrade.

📷 Photo & Video

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Financial/Sci RPN calculator

Touch RPN calc

RPN financial calculatorRPN scientific calculatorProgramming functions

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.

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HP12C emulationAudit tape for calculation historyUnit and currency converter

12Calc

by Ernest Brock

$8.99

This app provides a full-featured financial calculator experience, replicating the functionality of a popular physical model. It offers an audit tape for tracking calculations, a unit converter with currency exchange rates, and various worksheets with interactive graphs for financial analysis. Optimized for modern devices with high-resolution graphics and support for multiple orientations.

This app is a powerful RPN scientific calculator with extensive functions for mathematics, statistics, programming, and engineering. It includes programmer functions, fraction mode, probability distributions, and a stopwatch, offering a comprehensive tool for complex calculations.

RPN scientific calculator implementationProgrammer functions (binary, octal, hexadecimal)Fraction mode and probability distributions

Get real-time bus arrival times and distances for thousands of routes in Shanghai. This app also provides traffic conditions and nationwide public transit route planning.

Real-time bus arrival timesBus route and schedule informationShanghai traffic conditions

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

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OldRoll - Vintage Film Camera

Disposable Cam & Retro Filters

Realistic film camera emulationWide array of classic vintage camera stylesRetro filters and effects (VHS, grain, light leaks)

This app offers a realistic film camera experience with a variety of vintage camera emulations. Capture photos and videos with retro filters, light leaks, and custom date stamps for a nostalgic aesthetic.

📷 Photo & Video

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12C - Modern

Financial Calculator

HP 12c functionality reimplementationInteractive prompts and recipesRegister views for data inspection

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.

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Retro Rádió

by RadioFactory Kft

Stream 60s, 70s, 80s hitsLearn about presentersDiscover retro stars

Stream hits from the 60s, 70s, and 80s with this official radio app. Stay updated on your favorite presenters and retro music stars.

Stream live radio stations featuring Tejano, Country, and classic hits. Enjoy a diverse music selection from multiple channels directly on your mobile device.

Live radio streamingMultiple music genresTejano music

This platform connects job seekers with employers in Nepal, offering tools for job searching, application, and career development. It provides employers with advanced technology to find and recruit talent efficiently.

Job searching and applicationEmployer branding and job postingCandidate shortlisting tools

Scientific & Programable

Finance calculations (amortization, bond price, Black-Scholes)Business functions (break-even, currency exchange)Statistical analysis (regression, probability distributions)

This app is a scientific and programmable calculator designed for science and engineering, replicating the functionality of the HP-11C. It offers extensive features for finance, business, statistics, complex numbers, and unit conversions, with a programmable interface for custom calculations.

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Finance & Business Calculator

RLM-12PX

Finance and business calculationsLoan amortization and bond pricingBlack-Scholes options valuation

This finance and business calculator emulates the HP-12C Platinum, offering a comprehensive suite of tools for financial analysis, business calculations, statistics, and scientific functions. It allows for loan amortization, bond pricing, option valuation, currency exchange, and program creation, all within an intuitive iOS interface.

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my41CX

HP-41 Microcode Emulator

True microcode emulationModern user interfaceExpandable with ROM modules

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.

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