---
title: "RPN-65 SD - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "World's first pocket computer! Now running on your iPhone.  RPN-65 SD is the iPhone version of RPN-65 Pro, the first complete simulation of Hewlett-Packard's stunning HP-65 programmable calculator for"
---

# RPN-65 SD — United States
> First programmable calculator!

![RPN-65 SD App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/88/f5/27/88f52729-cd75-3778-cd16-51c32c715d4d/AppIcon-1x_U007emarketing-0-8-0-85-220-0.png/434x0w.png)

**Developer:** [Willy Kunz](https://apptail.io/developer/willy-kunz-XNx) (Switzerland)
**Category:** Productivity
**Rating:** 5.0/5 (8 ratings)
**Price:** $2.99
**Bundle ID:** ch.cuveesoft.rpn65sd
**Store:** Apple App Store
**Country:** United States
**Version:** 4.4.1 (released 2026-03-08)
**Original Release:** 2016-11-16
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1176059659)
**AppTail Page:** [https://apptail.io/app/rpn-65-sd-JJcb/united-states](https://apptail.io/app/rpn-65-sd-JJcb/united-states)

## RPN-65 SD Description
World's first pocket computer! Now running on your iPhone.

RPN-65 SD is the iPhone version of RPN-65 Pro, the first complete simulation of Hewlett-Packard's stunning HP-65 programmable calculator for iOS. Produced from 1974 to 1977 at an initial price of $795 (that's close to $5,000 today!), the HP-65 was a breakthrough. Not only was it programmable, it also contained a motorized magnetic card reader - and still fit into Bill Hewlett's shirt pocket.

Experience this revolutionary calculator on your iPhone. With over 180 original HP programs included with the app, you can get started right away.

"A work of art. Fantastic!" (MacBreak Weekly, episode 572)


Features:

• Virtual program and data cards
• Virtual 2000-line paper tape printer supports AirPrint
• Powerful database-driven card manager
• Create, delete, label, and organize a virtually unlimited number of cards
• Sharing: e-mail, AirDrop, Dropbox, iTunes, copy, paste, print
• Paste existing HP-65 listings into RPN-65 and run them
• "Live" display of stack, memory registers, program counter, flags
• Reads program and data cards created by RPN-65 Pro
• Reads data cards created by RPN-67 Pro/SD and RPN-97 Pro


Run RPN-65 SD in any of 4 modes:

1 - Just like the original HP-65
2 - Like the original HP-65, but at much higher speed
3 - With many user-interface improvements, like backstep key or jump to any program step
4 - "Super-65" with 999 program steps, 120 labels, 120 registers, nested subroutines, and much more

For details, free program downloads, calculator handbook and much more, visit the RPN-65 website: cuveesoft.ch/rpn65

## RPN-65 SD Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/bf/43/df/bf43df77-3b32-9ab0-ed4d-fb6293b39ae6/1.png/1242x2208.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/a5/ad/1d/a5ad1d49-b2ed-0e3d-4188-6bc35d2b3e9e/2.png/1242x2208.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8c/0d/a4/8c0da430-1e19-1c9f-3fd9-59f922f96935/3.png/1242x2208.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/38/75/e6/3875e634-9df9-3d7c-133b-715770e2e272/4.png/1242x2208.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8f/b5/0a/8fb50a2e-da32-0802-ada1-06c1bc4e271f/5.png/1242x2208.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/80/36/a5/8036a522-1a15-53b9-f21c-502a8932171f/6.png/1242x2208.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/37/46/61/374661fa-aac7-9129-c2ae-179193ca643a/7.png/1242x2208.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ec/b8/62/ecb862da-07e6-9124-3724-a3a8aac0fc5d/8.png/1242x2208.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/82/5c/23/825c2362-e486-256f-fc9e-d86f460a6663/9.png/1242x2208.png)

## RPN-65 SD Rating Breakdown in United States
- 5 stars: 8 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## RPN-65 SD Reviews in United States

### ***** "Lovely, useful—now with haptic key clicks!"
It seems just a few weeks ago I asked for haptic key click and now here it is! This is a nifty reminder of the satisfying “thunk” of the famously high quality keys of these classic physical calculators.
-- JeffXBrown, 2022-12-03

### ***** "My go-to calculator"
I’ve always been an HP calculator fan. My first calculator was a National Semiconductor RPN scientific. But I couldn’t afford the HP’s when I was in school. 

Now that I have an iPhone in my pocket every day, I don’t have as much need for a separate physical calculator. I’ve tried an HP-41c emulator that was somewhat disappointing. Andy Ihnatko recommended this one, so I gave it a shot. Graphically perfect. Keys are extremely responsive. The program card animation makes me smile. 

I somehow hit a button that put me in a weird mode. I couldn’t get out of it, so I emailed the developer. He got back to me within a day and helped me reverse my stupidity. 

I can’t recommend this one highly enough.
-- PBraun42, 2019-01-10

[View all RPN-65 SD reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## RPN-65 SD Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Spain | Productivity | #15 |
| Top Paid | Russia | Productivity | #25 |
| Top Paid | Germany | Productivity | #77 |
| Top Paid | Spain | Overall | #185 |

## RPN-65 SD Discovered Keywords
- calculator
- rpn calc
- rpn
- rpn calculator free
- rpn-65 sd

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## RPN-65 SD Available In
- [United States](https://apptail.io/app/rpn-65-sd-JJcb/united-states)
- [United Kingdom](https://apptail.io/app/rpn-65-sd-JJcb/united-kingdom)
- [Germany](https://apptail.io/app/rpn-65-sd-JJcb/germany)
- [France](https://apptail.io/app/rpn-65-sd-JJcb/france)
- [Türkiye](https://apptail.io/app/rpn-65-sd-JJcb/turkey)
- [Sweden](https://apptail.io/app/rpn-65-sd-JJcb/sweden)
- [China](https://apptail.io/app/rpn-65-sd-JJcb/china)
- [Mexico](https://apptail.io/app/rpn-65-sd-JJcb/mexico)
- [Brazil](https://apptail.io/app/rpn-65-sd-JJcb/brazil)
- [Italy](https://apptail.io/app/rpn-65-sd-JJcb/italy)
- [Chile](https://apptail.io/app/rpn-65-sd-JJcb/chile)
- [Colombia](https://apptail.io/app/rpn-65-sd-JJcb/colombia)
- [Cyprus](https://apptail.io/app/rpn-65-sd-JJcb/cyprus)
- [Czechia](https://apptail.io/app/rpn-65-sd-JJcb/czechia)
- [Denmark](https://apptail.io/app/rpn-65-sd-JJcb/denmark)
- [Dominican Republic](https://apptail.io/app/rpn-65-sd-JJcb/dominican-republic)
- [Algeria](https://apptail.io/app/rpn-65-sd-JJcb/algeria)
- [Ecuador](https://apptail.io/app/rpn-65-sd-JJcb/ecuador)
- [Estonia](https://apptail.io/app/rpn-65-sd-JJcb/estonia)
- [Egypt](https://apptail.io/app/rpn-65-sd-JJcb/egypt)
- [Spain](https://apptail.io/app/rpn-65-sd-JJcb/spain)
- [Finland](https://apptail.io/app/rpn-65-sd-JJcb/finland)
- [Greece](https://apptail.io/app/rpn-65-sd-JJcb/greece)
- [Hong Kong SAR China](https://apptail.io/app/rpn-65-sd-JJcb/hong-kong)
- [Hungary](https://apptail.io/app/rpn-65-sd-JJcb/hungary)
- [Indonesia](https://apptail.io/app/rpn-65-sd-JJcb/indonesia)
- [Ireland](https://apptail.io/app/rpn-65-sd-JJcb/ireland)
- [Israel](https://apptail.io/app/rpn-65-sd-JJcb/israel)
- [India](https://apptail.io/app/rpn-65-sd-JJcb/india)
- [Iceland](https://apptail.io/app/rpn-65-sd-JJcb/iceland)
- [Japan](https://apptail.io/app/rpn-65-sd-JJcb/japan)
- [South Korea](https://apptail.io/app/rpn-65-sd-JJcb/south-korea)
- [Kuwait](https://apptail.io/app/rpn-65-sd-JJcb/kuwait)
- [Kazakhstan](https://apptail.io/app/rpn-65-sd-JJcb/kazakhstan)
- [Lebanon](https://apptail.io/app/rpn-65-sd-JJcb/lebanon)
- [Lithuania](https://apptail.io/app/rpn-65-sd-JJcb/lithuania)
- [Luxembourg](https://apptail.io/app/rpn-65-sd-JJcb/luxembourg)
- [Latvia](https://apptail.io/app/rpn-65-sd-JJcb/latvia)
- [Madagascar](https://apptail.io/app/rpn-65-sd-JJcb/madagascar)
- [Malaysia](https://apptail.io/app/rpn-65-sd-JJcb/malaysia)
- [Nigeria](https://apptail.io/app/rpn-65-sd-JJcb/nigeria)
- [Netherlands](https://apptail.io/app/rpn-65-sd-JJcb/netherlands)
- [Norway](https://apptail.io/app/rpn-65-sd-JJcb/norway)
- [New Zealand](https://apptail.io/app/rpn-65-sd-JJcb/new-zealand)
- [Peru](https://apptail.io/app/rpn-65-sd-JJcb/peru)
- [Philippines](https://apptail.io/app/rpn-65-sd-JJcb/philippines)
- [Pakistan](https://apptail.io/app/rpn-65-sd-JJcb/pakistan)
- [Poland](https://apptail.io/app/rpn-65-sd-JJcb/poland)
- [Portugal](https://apptail.io/app/rpn-65-sd-JJcb/portugal)
- [Romania](https://apptail.io/app/rpn-65-sd-JJcb/romania)
- [Russia](https://apptail.io/app/rpn-65-sd-JJcb/russia)
- [Saudi Arabia](https://apptail.io/app/rpn-65-sd-JJcb/saudi-arabia)
- [Singapore](https://apptail.io/app/rpn-65-sd-JJcb/singapore)
- [Slovenia](https://apptail.io/app/rpn-65-sd-JJcb/slovenia)
- [Slovakia](https://apptail.io/app/rpn-65-sd-JJcb/slovakia)
- [Thailand](https://apptail.io/app/rpn-65-sd-JJcb/thailand)
- [Tunisia](https://apptail.io/app/rpn-65-sd-JJcb/tunisia)
- [Taiwan](https://apptail.io/app/rpn-65-sd-JJcb/taiwan)
- [Ukraine](https://apptail.io/app/rpn-65-sd-JJcb/ukraine)
- [Vietnam](https://apptail.io/app/rpn-65-sd-JJcb/vietnam)
- [United Arab Emirates](https://apptail.io/app/rpn-65-sd-JJcb/united-arab-emirates)
- [South Africa](https://apptail.io/app/rpn-65-sd-JJcb/south-africa)
- [Argentina](https://apptail.io/app/rpn-65-sd-JJcb/argentina)
- [Austria](https://apptail.io/app/rpn-65-sd-JJcb/austria)
- [Australia](https://apptail.io/app/rpn-65-sd-JJcb/australia)
- [Azerbaijan](https://apptail.io/app/rpn-65-sd-JJcb/azerbaijan)
- [Belgium](https://apptail.io/app/rpn-65-sd-JJcb/belgium)
- [Brunei](https://apptail.io/app/rpn-65-sd-JJcb/brunei)
- [Belarus](https://apptail.io/app/rpn-65-sd-JJcb/belarus)
- [Canada](https://apptail.io/app/rpn-65-sd-JJcb/canada)
- [Switzerland](https://apptail.io/app/rpn-65-sd-JJcb/switzerland)

---

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