# Calc-12E RPN Financial > Advanced RPN financial calculator emulator with enhanced features for professionals. (iPhone/iPad app by Stone Meadow Development LLC.) - Source: https://appshunter.io/ios/app/calc-12e-rpn-financial/id294438793 (this page in markdown: same URL + `.md`) - Developer: [Stone Meadow Development LLC](https://appshunter.io/developer/286506401) - Category: Business, Finance - Price: $1.99 - Rating: 4.00/5 from 20 App Store ratings · 54 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 20 MB - Languages: American English, German (Germany), European Portuguese, European Spanish - Released: 2008-10-23 - Data updated: 2026-08-25 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/calc-12e-rpn-financial/id294438793/reviews.md ## What is Calc? 5 Stars. “I can't tell you how often I use it, probably about as much as the phone app!" - CharlieW, President. Waterman & Company (Real Estate Investment and Development) “This is the first 12C type calculator for the itouch that has actually made me put down my real 12C. One of the best features of this calculator is the register display where you can see what is in FV, I, PV, PMT, etc. That alone makes it worth the $14.95 price. Consider the many other features that it has over and above the real 12C and you have one sweet program here. Best of the 12C emulators out there - hands down! “ - tsinvest It started in early 2008 with a belief that: • there was one and only one insanely great financial calculator • the iPhone is the perfect platform to bring that calculator back to life • it's not good enough to just copy the old, you have to make it better • a financial calculator is a professional tool, not a game From this mindset came Calc-12E, the first 12C emulator on the App Store. It was expensive back then ($20-$25) and compared to a game it still is because, well, you usually get what you pay for. Specifically: Foremost, if the math isn't right in the corner cases I can't trust the calculator. Calc-12E's algorithms were written for iOS by a (the?) key member of the original 12C development team who incorporated his solutions to the quirks in financial computation that historically tripped up lesser implementations. There are reasons the 12C was the absolute best, and Calc-12E draws directly on that heritage. While the original did what it could, 1980s technology made many features difficult, impractical or impossible to use. Calc-12E pioneered the following innovations to address shortcomings: • you can always see what's in the financial registers (and stack if you choose) so you have instant assurance that you've entered your data correctly. This feature has been copied by nearly every emulator on the App Store, for good reason. • visual cash flow editing radically eases how you deal with cash flows... believe it or not it is actually easy to manipulate cash flows with Calc-12E. There's a demo on YouTube, search for Calc12E. • Investment mode allows you to simultaneously evaluate metrics on up to three cash flow scenarios at a time. You can compare cash flows side-by-side AND because of visual cash flow editing you can play what-if games • the results of some calculations need to "leave the phone" to be useful. Amortization schedules, leasing terms, bond yields... everything can be sent via email using customizable templates Finally, a professional tool receives continuing support and updates. It does not nag you to rate it, it does not invite you to pay to get more. It does not crash. Check out Calc-12E's version history and reviews of previous versions. This is a live, supported app with tens of thousands of long term customers and I have never charged for an upgrade or cloaked features behind ads or paywalls. It's not ethical at this level (in my humble opinion!). When you buy Calc-12E you get my best (and evolving!) rendition of the most popular handheld calculator ever made. It's core (the math) comes from the same mind as your trusty original and to that foundation you get usability advances that actually enhance the overall tool. ## Key features - RPN financial calculator emulation - Visual financial register display - Visual cash flow editing - Simultaneous investment scenario evaluation - Emailable calculation results - Accurate financial computation algorithms ## Chart rankings - #178 in Top Paid · Business (US App Store) ## Recent user reviews (10 of 54) All indexed reviews: https://appshunter.io/ios/app/calc-12e-rpn-financial/id294438793/reviews.md ### 5/5 — Much better than the 12c *2018-12-21, version 4.2.3* Fast, great to use and reliable. Replaced my 20 year old 12c calc with this app a few years ago and never looked back ### 5/5 — iPad Keyboard Fix *2018-04-18* With the keyboard fix I now have a 4-star app that I can use both on the iPhone and iPad. Outstanding! ### 4/5 — It upsets me. *2018-04-06* A single, brief glance at the version history of this “once great” 12-C emulator tells a story of intrigue (essentially no updates since 2014). Come on. What happened to valuing loyal and appreciative customers? From your own description of this product, there seemed to have been no small amount of passion you poured into this calculator when you actually introduced fun to Finance. You’ve lost that loving feeling. Get it back, please? ### 3/5 — Great until ... *2017-11-29* Format issues of the keypad area on the iPad Pro. ### 3/5 — IOS 11 Problem *2017-11-17* I have an iPhone 8 Plus running IOS 11. If I’m listening to an stream of audio and/video, the stream stops 90% of the time when starting your app. If I pull down the control center the play/pause button needs to be pressed play to start the streaming again. ### 2/5 — Gone wonky *2017-11-15* Great ap but appears all visually squished on ipad since the most recent ios update. Keys too small to use. Fine on iphone. ### 3/5 — Great app that appears to have failed in portrait mode. *2017-10-05* I have use this app for many years now. Believe the most recent iOS 11 update the app appears to have failed and is no longer functional in landscape mode. In need of a refresh. ### 5/5 — Perfect! *2014-09-05* Just what this geek needed. I love calculating the NPV of my commissions. ### 5/5 — Outstanding *2014-08-02* The best financial calc I have tried. Nice functionality, with the n, I, PV, PMT and FV shown all the time. The font shrinks to show more digits, if necessary. When you push a color function button, keys that you can press next are highlighted. These are features that are not possible with a physical calculator. I only wish that the iPad version, which I use on my iPad Mini, had a "full-screen" mode. ### 3/5 — Portrait?? *2014-04-22* I have used an HP12C for many years and can't live with out it. I really don't like the portrait layout at all. I know you can just rotate it but it's slow, even on my iPhone5. Please add an option to turn this off in settings. I can't imagine anyone that uses a 12c all the time actually wanting portrait for any reason. Fix that and I give it 5 stars. ## Frequently asked questions about Calc ### What does Calc-12E RPN Financial do? Calc-12E RPN Financial is a sophisticated financial calculator app that emulates the functionality of a classic 12C financial calculator. It offers enhanced features for modern devices, including visual displays of financial registers and cash flows, making complex financial calculations more accessible and accurate for professionals. ### What are the key features of Calc-12E RPN Financial? Key features include RPN financial calculator emulation, a visual display of financial registers (FV, I, PV, PMT, etc.), visual cash flow editing for easier manipulation, and the ability to simultaneously evaluate up to three investment scenarios. It also provides accurate financial computation algorithms and allows results like amortization schedules to be emailed. ### How much does Calc-12E RPN Financial cost? The app is a paid application, with a one-time purchase price of $14.95. This price reflects its professional-grade functionality and the advanced algorithms used, which are based on the original 12C development team's expertise. There are no in-app purchases or subscription fees. ### Is Calc-12E RPN Financial compatible with my device? The description indicates the app was developed for iOS devices, specifically mentioning the iPhone and iPod Touch. While specific version compatibility isn't detailed, it is designed to run on modern iOS operating systems. It is a professional tool that receives continuing support and updates. ### Who would benefit from using Calc-12E RPN Financial? This app is ideal for professionals in real estate investment and development, finance, and other business sectors who require precise and efficient financial calculations. Its advanced features, like visual cash flow editing and scenario analysis, make it a valuable tool for investment evaluation and financial planning. ## Version history (last 5 releases) ### 4.2.3 — 2018-04-18 This update from Apple will improve the functionality of this app. No new features are included. Bug fix: The keyboard isn't squished anymore when launching in landscape on an iPad ### 4.2.2 — 2017-10-10 iOS11 HotFix. This is a partial fix for the problems introduced with iOS11, meaning that it *will* run on iPad, and it will run in landscape on iPhone. What isn't fixed is the ability to scroll the cash flow viewer—it won't scroll. I'll get to that, but right now no obvious solution presents itself. ### 4.2.1 — 2014-04-09 FIX: Removed experimental pop-up ### 4.2 — 2014-04-03 New: email templates--now you can create your own templates for most of the email sent by the calculator. It is not as simple as I'd like, but it does give you many options. See the FAQs at the support site for more information. Fix: rounding of displayed numbers ### 4.1.1 — 2014-02-20 Fixed bug in the email amortization table, accessibility tweaks. ## Apps similar to Calc | App | Rating | Price | Category | | --- | --- | --- | --- | | [UniFi Verify](https://appshunter.io/ios/app/unifi-verify/id1499320261) | 4.8 (11,366) | Free | Business | ## More apps by Stone Meadow Development LLC - [Calculator12 RPN](https://appshunter.io/ios/app/calculator12-rpn/id286506398) - [Resuscitate! CPR AED & Choking](https://appshunter.io/ios/app/resuscitate-cpr-aed-and-choking/id363393502) All apps by Stone Meadow Development LLC: https://appshunter.io/developer/286506401 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*