# Calc-12E RPN Financial — user reviews > 54 indexed App Store user reviews of Calc by Stone Meadow Development LLC, rated 4.00/5 from 20 ratings. - Source: https://appshunter.io/ios/app/calc-12e-rpn-financial/id294438793/reviews - App overview in markdown: https://appshunter.io/ios/app/calc-12e-rpn-financial/id294438793.md - Rating breakdown: 5★ 11 · 4★ 2 · 3★ 4 · 2★ 1 · 1★ 2 ## Newest reviews (12 of 54) ### 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 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. ### 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. ### 4/5 — Wish I could turn *2014-04-18* Off clicking noise Calculator great don't need hp12c anymore Can't figure out how to turn sound off (can on iPad) No easy way to communicate with developer ### 4/5 — Mise à jour ios6 *2013-11-07* Très bonne appli dont je me sers depuis le début Super pour la mise à jour ios7 Mais pas adapté iphone 5 When iphone 5 screen update? ### 4/5 — Correction - Error in TVM calculation *2012-07-12, version 3.4.0* Was user error in setting beginning or end of period for payment. Something to pay attention to for all new users to any financial calculators. Everything works well now and support response was great! *********************** ### 4/5 — Click *2012-01-28, version 3.4.0* Get rid of the key click! ### 3/5 — Should take advantage of ipads screen *2011-10-18* I was using a lot more when I just had an Ipod touch, but now with the ipad I can see a poor designed application. When I am doing my calculations I do not bother with the background of the screen but how much of the screen I can use. PLEASE INCREASE THE SIZE OF THE CALCULATOR FOR THE IPAD VERSION. Make it to fit ipads screen! ### 5/5 — Well worth it. *2011-03-26* I have never used a financial calculator before, but my current finance class practically requires it. I figured at this price it was worth it to try and it works great. The interface is easy to use and so far it has done everything I need it to. ### 5/5 — Great enhancement of the 12C! *2011-03-14, version 3.3.0* Visual cash flows, ability to see what's in the financial registers or the stack (!), buttons that support the retina display... This is a version of the venerable 12C for modern times. Great job! ### 5/5 — Calc-12E RPN Financial Calculator *2010-09-07* I am in training for CFP and I needed a calculator that I could use with out having to buy a physical calculator, I found this app to be very, very helpful and this calculator does every thing that the 12C does but it does it much faster and I don't have to carry around another gaget. I would like to get a manual on how to operate this calculator but I have not found one yet. Great app. ### 5/5 — 素晴らしいの一言です。 *2010-04-19* 従来からHP-12Cを活用しており、LX200というPIMに装備された同等の機能を活用していました。本ソフトは、処理速度、精度の両面から全く素晴らしいの一言です。あえて問題を言えばHP-12Cの入力方法が通常の電卓と異なるために一般的には、少々使いにくい点です。 ## Most critical reviews (10 lowest-rated) ### 1/5 — iPad - please move calculator back to the center *2013-11-07, version 3.5.0* Latest update places calculator in lower left hand corner of iPad; not in the center like it's pictured in the app ad. Please move it back to center of screen. ### 1/5 — Nao *2012-07-29* Não vale economizar comprando esse aplicativo. Arrependi e tive que comprar o da HP pois algumas funções neste não estão disponíveis e outras travam literalmente. Enfim foi um "barato" que saiu caro. ### 1/5 — Where did my calculator go? *2012-02-02* This was one of the first Apps I bought for my iPhone. It was the HP-12C, original classic and although the iPad upgrade wasn't very exciting it worked. The latest update coverts it to a 12E? What is that? I tried switching it back to the Traditional layout, but it isn't a 12C. I wonder how many others bought something from this company and then got 'upgraded' to something completely different. ### 1/5 — Avoid *2012-01-29, version 3.4.0* The changes to the layout destroy the hp feel, which is why I have this app. Bring back the real layout! ### 1/5 — Bad news *2009-02-18, version 0* Do not trust the results I get all wrong answers. I checked against my real 12c ### 1/5 — Solving for Interest/ROR errors *2008-11-20* I love the concept and features of this app, but I don't have confidence in the results. LIke "Edroid" I get inaccurate results wehn solving for Interest amounts and rates. Even the example for simple interest that is shown in the FAQs page of the author's Web site returned a different result. It would be nice to see a post from the author that an update is in process and that all algorithms are being proofed. Has anyone tried these calcs with Calculator12 from the same author? ### 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. ### 2/5 — Glitch?? *2010-12-15, version 3.2.0* Strange was working fine for a long time but past two days has been giving me inaccurate loan payment terms. ### 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. ## Most praised reviews (10 highest-rated) ### 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! ### 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. ### 5/5 — Great app. Fantastic support *2014-04-04, version 4.2* Works as good as my 12c. Support was very responsive to a question I had. A developer responded right away to my email. Keep up the good work and thanks. ### 5/5 — Thank you, thank you, thank you!!! *2014-01-16, version 4.0* I love the new portrait mode. Your hard work is definitely appreciated. I'm a 30+ year HP12C user and your app is the best. Thanks! ### 5/5 — Best financial calculator money can buy *2014-01-16, version 4.0* Updated for iPhone 5 layout ### 5/5 — ボタン配列 *2012-01-30* 追記 ipadの設定からtraditional layoutに戻せるようです。 いつも便利に使わせていただいています。 さて、 アップデートしたらボタンの配列が変わってしまいました。 元のhp12cの配列に戻してください。 戻り次第評価を5にします。 ### 5/5 — Development Manager *2012-01-29, version 3.4.0* A must have! I love this app. ### 5/5 — 12E *2012-01-28, version 3.4.0* Customer service was fantastic. I am extremely happy with the app. --- *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.*