--- title: "RPN-97 Pro - Reviews, Revenue and Downloads in United States | Apple App Store" description: "A dream calculator of the 70's, priced at $3,200 in today's dollars, now affordable for everyone! RPN-97 Pro is the first complete simulation of Hewlett-Packard's legendary HP-97 programmable calcula" --- # RPN-97 Pro — United States > Vintage Desktop Calculator ![RPN-97 Pro App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/4d/ab/d9/4dabd9b5-6ca0-c101-617e-6042a9d75e18/AppIcon-0-1x_U007emarketing-0-7-0-0-85-220-0.png/434x0w.png) **Developer:** [Willy Kunz](https://apptail.io/developer/willy-kunz-XNx) (Switzerland) **Category:** Utilities **Rating:** 4.9/5 (11 ratings) **Price:** Free **Bundle ID:** ch.cuveesoft.rpn97pro **Store:** Apple App Store **Country:** United States **Version:** 7.5 (released 2026-04-09) **Original Release:** 2014-02-21 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id816249055) **AppTail Page:** [https://apptail.io/app/rpn-97-pro-hpkl/united-states](https://apptail.io/app/rpn-97-pro-hpkl/united-states) ## RPN-97 Pro Description A dream calculator of the 70's, priced at $3,200 in today's dollars, now affordable for everyone! RPN-97 Pro is the first complete simulation of Hewlett-Packard's legendary HP-97 programmable calculator for iOS. Produced from 1976 to 1984, the HP-97's features coupled with its capability to store programs on magnetic cards made it a huge success among scientists, engineers and other professionals. Thousands of programs were written for it. Now you can run them right on your iPad, with more ease and faster than ever before. To get you started quickly, download hundreds of program cards from our website for free. What users said: “The most delightful app I possess. The magnet card reader emulation rocks. Would have paid much more for this." "As the owner of an actual working HP 97 calculator, I am blown away with this new simulator. Simply fabulous." "Whoever coded this my hat goes off to you - what a professional piece of work, incredible app." RPN-97 Pro is fully compatible with RPN-67 Pro, its companion simulator of the HP-67 calculator. Features: • Virtual program and data cards • Virtual paper tape printer • Powerful database-driven card manager • Create, label, and organize a virtually unlimited number of cards • Use iTunes to effortlessly save entire card collections on your Mac/PC • Sharing: e-mail, AirDrop, Dropbox, copy, paste, print • Formatted listing clearly showing labels and targets of branches • E-mail listings and let the recipient paste the text right into RPN-97 • Print listings on any AirPrint-compatible printer • Program listing on paper tape shows subroutine nesting • Edit paper tape • E-mail paper tape, or print it via AirPrint • Cut/copy/paste displayed value or program steps • Paste HP-67 or HP-97 listings from other sources into RPN-97 and run them • "Live" display of stack, memory registers, program counter, flags • Show program usage notes • 30 selectable background images, even add your own • Much faster than a real HP-97 • Low-battery indicator (iPad charge 10% or less) • Compatible with RPN-67 Pro and RPN-67 SD, CuVee Software's HP-67 simulators • Supports hardware keyboard While RPN-97 Pro can work exactly like a real HP-97, changing a simple setting will turn the app into a super-charged HP-97: • Up to 999 program steps, 8 subroutine levels, 6 additional flags (F4...F9) • 100 additional registers • 100 additional labels • 100 built-in constants and conversions • More than 150 additional powerful operations and functions Plus: • 15 commands to print and manipulate any range of extended registers • Unrestricted register arithmetic • Exchange x with any register • Complex numbers mode, hyperbolic functions • Non-volatile memory - stack, registers, program, flags, paper tape • Status indicators for prefix keys (EXT, f, LBL, GTO, etc.) • Display showing thousands separators (optional) • Text output on paper tape in 10 colors, even simple plotting • Stack-of-stack: push/pop the entire stack on internal stack (4 levels) • Single-step into subroutines (optional) • Powerful debugging aids, including 10 breakpoints with counters • Keycodes translated to command name while entering or single-stepping a program • Change the duration of the PAUSE command • Cancel SST or BST operation by simply sliding your finger off the depressed key • Compress constants in programs into a single step (reversible) • Use existing programs in text format by a simple paste operation RPN-97 Pro comes with more than 130 programs pre-installed, including HP Standard Pac, HP Business Decisions Pac, HP Math Pac I, HP Stat Pac I, and HP Surveying Pac I. The simulator has been verified to correctly run the examples given in HP Civil Engineering Pac I, HP Clinical Lab Pac, HP E.E. Pac I, HP Games Pac I, HP M.E. Pac I, HP Navigation Pac I, as well as large number of programs published in Users' Library Solutions. For more information and free program downloads visit the RPN-97/67 website: cuveesoft.ch/rpn67 ## RPN-97 Pro Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/40/98/ef/4098ef11-1074-c793-c1d5-15541356b5d3/a537a03d-7a37-4c9a-9ce1-60859659514b_1.png/2732x2048.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/1d/c6/45/1dc64559-ecbd-4c8d-b029-cd3195038bda/d8c47f52-185c-4ad0-99fa-0e47ea58c37b_2.png/2732x2048.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/6d/d5/f3/6dd5f3be-0c78-6bfd-8f76-584f0fcde568/32dc54dc-3cb1-463b-af12-e769cc46a130_3.png/2732x2048.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ef/2f/42/ef2f421f-ede2-3798-de4b-5dec0d50541e/a0a7c7e2-2e02-4ccd-9c2b-1ab61d68a3a5_4.png/2732x2048.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f6/10/a1/f610a1d2-d3b5-652c-e5fd-5bcdd854ac7a/b99bdb69-c1a1-40dc-96df-5324eeaf2015_5.png/2732x2048.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/11/58/ff/1158ff28-82c9-440b-4d65-a702ffcf246a/adfd064d-97e9-4649-b00d-a036cf8c9181_6.png/2732x2048.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/82/73/52/8273527b-586d-206c-74dc-a8558de334df/7.png/2732x2048.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/0b/ac/2e/0bac2e69-10d1-89f5-66c5-33a3d6fde961/8d2b48ab-c530-42e4-8c19-aa1e99c54597_7.png/2732x2048.png) - [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/64/83/18/6483182e-6016-6c35-8e17-2bbcdfc69de0/9c6f9588-8722-40f4-92d3-3f68b301499e_8.png/2732x2048.png) - [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/1d/8e/79/1d8e798d-5c0d-203e-0d4c-3ed43b109702/10.png/2732x2048.png) ## RPN-97 Pro Rating Breakdown in United States - 5 stars: 10 (91%) - 4 stars: 1 (9%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## RPN-97 Pro Reviews in United States ### ***** "My new favorite iPad calculator" I love this calculator. I found CuVee software a couple months ago. I have been using the 67 on my iPhone and iPad regularly—I really enjoy it. I installed the 97 today on my iPad, and it’s just perfect as a desk HP calculator. CuVee makes the highest quality HP emulations. Their design choices, including their modern additions, are elegant and simple to use. And they are gorgeous and powerful. I highly recommend them. -- wesperdue, 2025-11-13 ### ***** "Fantastic Emulator" I have all of the Cuvée emulators. Having actually owned many of these HP’s it is a real treat the have them all in one place on my iPhone and iPad. With the originals getting old, I can save mine from the wear and tear they might get into if I carried them around. Please, how about the HP-01. -- Transmaster, 2025-10-23 ### ****- "Printer doesn’t make sounds" I love the app I just wish the printer was more realistic. So when I print something it sounds like it’s doing something. -- CreativeCredent, 2019-11-13 ### ***** "A true work of creative genious and brilliant programming" This app should receive some type of award for it absolute 100% accuracy to the legendary HP calculator which it emulates. As an advanced assembly, C, C++, Objective-C, LISP, etc., I must say that this developer has extraordinary skills. I still have one of the original HP 97’s, and most of my magnetic program cards are still readable. Thanks to this app, I am able to read off the memory cards to the calculator and then program into the iPad and no I will never lose the hard work I put into those programs many, many years ago! I have managed to create an (enterpriseª) that should easily plug into this app which allows reading data from the old Hewlett-Packard striped magnetic card via a credit card reader plugged into the headphone jack of the iOS device. If the developer is interested in the source code, I’ll be happy to provide it to him. We all know memory cards, especially from the late 70s and early 80s are very volatile and, as time passes, more prone to non-recoverable memory loss. As I mentioned above, this beautifully designed app allows us to enjoy the simplicity of cutting edge at the time! It makes one appreciate how much has changed over that past 30-40 years. While my interest in recovering the data off of the cards is mostly nostalgic, some of the programs I created are unbelievable for the time period in which they were made! It goes to show how far ahead of the curve HP was, and somewhat still is (but declining rapidly, in my humble opinion), in the field of calculator technology. I have run some tests to compare accuracy between devices and, when running in the non-enhanced speed (e.g. the actual native operational speed of the HP), the results are within milliseconds a beach other and the calculations 100% accurate 99.9% of the time (mostly due to the emulation layer for the HP procesor -> ARM architecture, if I had to guess). Besides, we’re talking discrepancies of several inverse orders of magnitude (therefore, neglible). Awesome job, thanks for updating to the iPad PRO resolution, you are a true hacker my friend. ª - As both a standard Apple Developer and an Enterprise/VPP Developer, the card reader was created via my enterprise account and, thus, is not currently available on the app store. If the developer contacts me (just reply to the comment), I’ll make changes to the app to permit approval on the general app store and provide the source code for the framework to CuVee Software, free of charge under the GNU Lesser Res -- sietec, 2018-08-02 ### ***** "Amazing & Retro" Have the actual hardware but it doesn't work. This app works great! It comes with a ton of software. Sure there are modern apps that work more efficiently but every time I use RPN-97 I marvel how clever it is. The developer's website is a treasure trove of HP memories. In addition the app has some modern features that can be activated. Many thanks for the great memories it gives me! -- bquin, 2017-08-25 ### ***** "Wonderful App!" I used this calculator for work and pleasure back in the 90's and loved it. I have no idea what happened to it. This app is a perfect replacement. I'd rate it 10 stars if I could. On the developer's web site you can download most of the program cards written by HP and many others written by users. The developer has really enhanced the original calculator and promises more to come. There is an option in the settings to use the enhanced version; it has an extra 100 storage registers that can be accessed just like the original registers; it has 1,000 program steps; it has the ability to print ASCII characters; it has many additional functions accessed by an new EXT key. The paper tape of your calculations can be emailed or printed. This app is well worth the price. -- DonPhillips, 2014-09-10 ### ***** "Another Winner!!" I have purchased all of the previous HP RPN calculators by Cuvee and use one or two of them every day. Usually the HP-45 for routine calculations and HP-70 for anything having to do with finance. However I am even more impressed by the implementation of the HP-97. This is truly a work of art. Better than the original from HP which cost about $750 during the 1970's. It has now become my go-to calculator. HP led the way with products that have not been equalled for day-to-day calculations. Cuvee and Apple have now brought these designs into the digital age. I wish you great success. My only concern is that you are running out of HP products to emulate. -- SteveFSR, 2014-03-10 ### ***** "Fabulous simulator" As a big fan of the original RPN-97 Pro and the owner of an actual working HP 97 calculator, I am blown away with this new simulator of the HP 97. The quality of the interface and graphics are very good and are top quality in feel and look of the real thing, not to mention an insanely expanded and powerful extended function set. Simply fabulous. -- virgil66, 2014-03-09 ### ***** "Just wild" I don't "need" any of these kinds of apps but I've got almost all of them. I had the real ones back in the day, including this 97 and it's just a blast to play around with it....great memories. It's incredibly well implemented, particularly the support for the cards. Must-have for any HP calc aficionado. -- Dhjdhj, 2014-02-25 [View all RPN-97 Pro reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## RPN-97 Pro Discovered Keywords - rpn - 97 pro ## Apps Similar to RPN-97 Pro - [iPerf3 Performance Test Tool](https://apptail.io/app/iperf3-performance-test-tool-RaIb/united-states) - [Halcyon Calc](https://apptail.io/app/halcyon-calc-BsKc/united-states) - [SFX Calc Premium](https://apptail.io/app/sfx-calc-premium-OQOc/united-states) - [devCalc Pro](https://apptail.io/app/devcalc-pro-aJZc/united-states) - [GO-29 SciRPN](https://apptail.io/app/go-29-scirpn-afed/united-states) - [GO-25 SciRPN](https://apptail.io/app/go-25-scirpn-lCUd/united-states) - [GO-21 SciRPN](https://apptail.io/app/go-21-scirpn-SGEe/united-states) - [x36](https://apptail.io/app/x36-ZJNf/united-states) - [ZCalcPro](https://apptail.io/app/zcalcpro-IrXj/united-states) - [RLM-10CX](https://apptail.io/app/rlm-10cx-gjMn/united-states) ## RPN-97 Pro Available In - [United States](https://apptail.io/app/rpn-97-pro-hpkl/united-states) - [Germany](https://apptail.io/app/rpn-97-pro-hpkl/germany) - [Switzerland](https://apptail.io/app/rpn-97-pro-hpkl/switzerland) - [Netherlands](https://apptail.io/app/rpn-97-pro-hpkl/netherlands) - [France](https://apptail.io/app/rpn-97-pro-hpkl/france) - [Canada](https://apptail.io/app/rpn-97-pro-hpkl/canada) - [Italy](https://apptail.io/app/rpn-97-pro-hpkl/italy) - [Denmark](https://apptail.io/app/rpn-97-pro-hpkl/denmark) - [Austria](https://apptail.io/app/rpn-97-pro-hpkl/austria) - [Taiwan](https://apptail.io/app/rpn-97-pro-hpkl/taiwan) - [Brazil](https://apptail.io/app/rpn-97-pro-hpkl/brazil) - [Spain](https://apptail.io/app/rpn-97-pro-hpkl/spain) - [Japan](https://apptail.io/app/rpn-97-pro-hpkl/japan) - [United Kingdom](https://apptail.io/app/rpn-97-pro-hpkl/united-kingdom) - [Egypt](https://apptail.io/app/rpn-97-pro-hpkl/egypt) - [Finland](https://apptail.io/app/rpn-97-pro-hpkl/finland) - [Greece](https://apptail.io/app/rpn-97-pro-hpkl/greece) - [Hong Kong SAR China](https://apptail.io/app/rpn-97-pro-hpkl/hong-kong) - [Hungary](https://apptail.io/app/rpn-97-pro-hpkl/hungary) - [Indonesia](https://apptail.io/app/rpn-97-pro-hpkl/indonesia) - [Ireland](https://apptail.io/app/rpn-97-pro-hpkl/ireland) - [Israel](https://apptail.io/app/rpn-97-pro-hpkl/israel) - [India](https://apptail.io/app/rpn-97-pro-hpkl/india) - [Iceland](https://apptail.io/app/rpn-97-pro-hpkl/iceland) - [South Korea](https://apptail.io/app/rpn-97-pro-hpkl/south-korea) - [Kuwait](https://apptail.io/app/rpn-97-pro-hpkl/kuwait) - [Kazakhstan](https://apptail.io/app/rpn-97-pro-hpkl/kazakhstan) - [Lebanon](https://apptail.io/app/rpn-97-pro-hpkl/lebanon) - [Sri Lanka](https://apptail.io/app/rpn-97-pro-hpkl/sri-lanka) - [Luxembourg](https://apptail.io/app/rpn-97-pro-hpkl/luxembourg) - [Mexico](https://apptail.io/app/rpn-97-pro-hpkl/mexico) - [Malaysia](https://apptail.io/app/rpn-97-pro-hpkl/malaysia) - [Nigeria](https://apptail.io/app/rpn-97-pro-hpkl/nigeria) - [Norway](https://apptail.io/app/rpn-97-pro-hpkl/norway) - [New Zealand](https://apptail.io/app/rpn-97-pro-hpkl/new-zealand) - [Peru](https://apptail.io/app/rpn-97-pro-hpkl/peru) - [Philippines](https://apptail.io/app/rpn-97-pro-hpkl/philippines) - [Pakistan](https://apptail.io/app/rpn-97-pro-hpkl/pakistan) - [Poland](https://apptail.io/app/rpn-97-pro-hpkl/poland) - [Portugal](https://apptail.io/app/rpn-97-pro-hpkl/portugal) - [Romania](https://apptail.io/app/rpn-97-pro-hpkl/romania) - [Russia](https://apptail.io/app/rpn-97-pro-hpkl/russia) - [Saudi Arabia](https://apptail.io/app/rpn-97-pro-hpkl/saudi-arabia) - [Sweden](https://apptail.io/app/rpn-97-pro-hpkl/sweden) - [Singapore](https://apptail.io/app/rpn-97-pro-hpkl/singapore) - [Slovenia](https://apptail.io/app/rpn-97-pro-hpkl/slovenia) - [Thailand](https://apptail.io/app/rpn-97-pro-hpkl/thailand) - [Türkiye](https://apptail.io/app/rpn-97-pro-hpkl/turkey) - [Ukraine](https://apptail.io/app/rpn-97-pro-hpkl/ukraine) - [Vietnam](https://apptail.io/app/rpn-97-pro-hpkl/vietnam) - [United Arab Emirates](https://apptail.io/app/rpn-97-pro-hpkl/united-arab-emirates) - [South Africa](https://apptail.io/app/rpn-97-pro-hpkl/south-africa) - [Armenia](https://apptail.io/app/rpn-97-pro-hpkl/armenia) - [Argentina](https://apptail.io/app/rpn-97-pro-hpkl/argentina) - [Australia](https://apptail.io/app/rpn-97-pro-hpkl/australia) - [Azerbaijan](https://apptail.io/app/rpn-97-pro-hpkl/azerbaijan) - [Belgium](https://apptail.io/app/rpn-97-pro-hpkl/belgium) - [Belarus](https://apptail.io/app/rpn-97-pro-hpkl/belarus) - [Chile](https://apptail.io/app/rpn-97-pro-hpkl/chile) - [China](https://apptail.io/app/rpn-97-pro-hpkl/china) - [Colombia](https://apptail.io/app/rpn-97-pro-hpkl/colombia) - [Czechia](https://apptail.io/app/rpn-97-pro-hpkl/czechia) - [Dominican Republic](https://apptail.io/app/rpn-97-pro-hpkl/dominican-republic) - [Algeria](https://apptail.io/app/rpn-97-pro-hpkl/algeria) - [Ecuador](https://apptail.io/app/rpn-97-pro-hpkl/ecuador) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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