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.
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
🚀 Modern Convenience of a Classic
🚀 Made me Money
🚀 Perfect
🚀 Greatest of all times!
🚀 Just like my handheld
🚀 Emulator
🚀 Finally works like my old dinosaur
🚀 An Excellent Must Have
🚀 Great App, It Makes Me Feel Fancy
🚀 The Top Calculator Out There
🚀 Best Update of Best Financial Calculator
🚀 HP 12c App
🚀 retired
🚀 Very good
🚀 n/a
🚀 Oldie but goodie
🚀 Head bottle washer
🚀 HP12C owner
🚀 HP Calculators
🚀 Just like my old friend
🚀 Better than ever — better even than the original HP calculator
🚀 My one and only
🚀 Great work!!
🚀 HP 12c
🚀 Great
Room to Improve
🐛 Don't fix what's not broken
🐛 In decline
🐛 Step backward
🐛 It used to work, but now it doesn't
🐛 Major step backwards in design
🐛 Major gap backwards in design
🐛 Ruined app, now even worse, 10 negative stars!
🐛 Retrograde upgrade - avoid.
🐛 Retrograde update has spoiled the app completely
🐛 Layout
🐛 Don't care for recent upgrade.
🐛 Keying is inconsistent
🐛 Buttons don't respond well
🐛 Terrible Update
🐛 Awful Update - Destroyed for iPad
🐛 Changed screen layout
🐛 New Version Fails in Every WY compared with the previous version
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.
Touch RPN calc tops our hp 12c app ranking as of September 2026, with a 3.4-star average from 208 App Store ratings, and it's free to download.
Are there free hp 12c app for iPhone?
Yes — 17 of the top hp 12c app we rank are free to download, including Touch RPN calc and Retro 15C.
Does Touch RPN calc have ads or in-app purchases?
Touch RPN calc shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
How many hp 12c app are on the App Store?
We track 247+ hp 12c app on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
What kind of calculator is this?
This app is a Reverse Polish Notation (RPN) calculator. It offers both financial and scientific calculation modes, designed to emulate popular industry-standard models like the HP-12C and HP-11C.
Does it have programming features?
Yes, it implements programming functions similar to the HP-12C. This allows users to create and run custom programs directly on the calculator.
