Best C12 Apps

RB 20c Financial Calculator

📊 Productivity

(0)

12C-style RPN: loans, NPV, IRR

RPN stack with arithmetic operationsTime Value of Money calculationsCash flow analysis (NPV, IRR)

This app emulates the functionality of a classic financial calculator, offering RPN input and a comprehensive suite of financial, statistical, and date calculation tools. It provides both a free version with core features and a Pro version with advanced sharing and export capabilities.

DIY auto A/C recharge

Step-by-step vehicle-specific instructionsBluetooth connectivity with Smartcharge™ gaugeInstructional videos

This app guides you through recharging your vehicle's air conditioning system with step-by-step instructions tailored to your specific car. It offers video tutorials, helps locate the low side pressure port, and provides essential vehicle specifications for a successful DIY recharge.

🔍 Reference

(303)

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

Places, navigation & traffic

Real-time GPS navigationLive traffic dataPublic transport updates

Navigate your world with real-time traffic, turn-by-turn directions for driving, walking, cycling, and public transport. Discover millions of businesses and places with photos and reviews. Plan trips with Street View, Immersive View, and offline maps.

🗺️ Navigation

(7.4M)

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.

💰 Finance

(10)

MathU 12D Financial Calculator

Surpasses the classic HP-12C

$4.99

This app offers a powerful financial calculator with Reverse Polish Notation (RPN) that emulates and enhances the classic HP-12C. It provides visible financial registers, fast computations, and a two-line display for improved usability and accuracy in financial calculations.

RPN entry systemVisible financial registersFast computation speed

💰 Finance

(113)

paid

Battery Charging Animation・Up

#1 Live 3D Wallpaper Maker 4K

Exclusive charging animation collectionCustomizable progress icons and soundsCouple charging animations

Personalize your device's charging experience with a vast collection of live 3D wallpapers and animations. Create your own unique charging visuals by uploading photos or videos, and customize sounds and icons. Discover themed packs and couple animations for a fun and engaging charging session.

🎨 Graphics & Design

(11K)

Cambridge® C1 Tests 2026

by Diego Marco

Hundreds of practice questionsAuthentic exam formatDetailed answer explanations

Prepare for the Cambridge C1 Advanced exam with hundreds of practice questions covering Reading, Use of English, and Listening. Get detailed explanations for every answer to master grammar, vocabulary, and comprehension skills. Track your progress through authentic exam formats.

📚 Education

(2)

uCertifyPrep Oracle DB 12c

📚 Education

(0)

12C Platinum Calculator

120+ built-in financial functionsRPN keystroke entryProgrammable keystrokes (up to 99)

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.

🔧 Utilities

(2)

by Stone Meadow Development LLC

Calc-12E RPN Financial

$1.99

This app is a sophisticated financial calculator designed for professionals, offering advanced features and an intuitive interface. It emulates a classic financial calculator with enhancements for modern devices, providing accurate computations and visual aids for complex financial tasks.

RPN financial calculator emulationVisual financial register displayVisual cash flow editing

💼 Business

(20)

paid

A New Pair of Glasses 12 Steps

AA Big Book Workshops Audio

AA Steps & Traditions audioDaily readings and reflectionsHow to live sober guides

Access a vast library of audio content focused on Alcoholics Anonymous principles, recovery, and personal stories. Explore workshops, daily reflections, and speaker tapes to support sobriety and learning about the AA program. Offers free introductory sessions with options to unlock hundreds more hours of content.

💪 Health & Fitness

(732)

3C USA

by The Tabernacle Inc

Create user profileSecure online givingWatch latest sermons

Connect with a global ministry's local USA campuses. Access sermons, join live services, and engage with an online community. Discover involvement opportunities and register for events.

🌟 Lifestyle

(15)