---
title: "RPN-70 SD - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "RPN-70 SD is a complete simulation of the financial hand-held calculator HP-70 from 1974. It handles loan amortization, saving plans, depreciation, and much more with ease.  What users said:  "Looks g"
---

# RPN-70 SD — United States
> Very rare vintage calculator

![RPN-70 SD App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/74/79/1d/74791dfe-0e9a-82e3-d28a-67cb4b8678bc/AppIcon-1x_U007emarketing-0-7-0-85-220-0.png/400x400bb.png)

**Developer:** [Willy Kunz](https://apptail.io/developer/willy-kunz-XNx) (Switzerland)
**Category:** Productivity
**Rating:** 4.7/5 (11 ratings)
**Price:** Free
**Bundle ID:** ch.cuveesoft.rpn70sd
**Store:** Apple App Store
**Country:** United States
**Version:** 3.4.1 (released 2025-10-17)
**Original Release:** 2013-11-12

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id738422213)
**AppTail Page:** [https://apptail.io/app/rpn-70-sd-VmYc/united-states](https://apptail.io/app/rpn-70-sd-VmYc/united-states)

## RPN-70 SD Description
RPN-70 SD is a complete simulation of the financial hand-held calculator HP-70 from 1974. It handles loan amortization, saving plans, depreciation, and much more with ease.

What users said:

"Looks good, all functions you need. Love it!"

"This is a beautiful emulation of a very rare HP financial calculator from 1974. Works just like the original but better! Faster, more accurate, with 10 more storage registers, and a popup window lets you see the contents of each stack, financial and storage register. Provides TVM4 functionality for compound interest as well as accumulated simple interest. A true work of art!"

Features:
• Photo-realistic look based on an existing device
• Animated keys with click sound (adjustable volume)
• All functions and operations of the HP-70 fully implemented
• Correct wrong number entries by swiping across the display
• Cut/copy/paste of display value
• Double-tap display to view the stack and memory registers
• Visual indicators keep track of input parameters entered
• 10 non-volatile memory registers (not available in original HP-70)

The HP-70 was discontinued after just one year. It is one of the rarest calculators, hard to find in any condition.

NOTE:
RPN-70 SD is a faithful simulation of a vintage HP-70 calculator, as has been verified against a real device using the examples in the Applications Cookbook section of the HP-70 manual. In certain cases, what may appear like a bug of the app is actually an idiosyncrasy of the HP-70.

IMPORTANT: The HP-70 requires exactly three input parameters from the top-row keys, at least one of them being either "n" or "i". In other words, you can't use PMT, PV, and FV as input parameters simultaneously.

A version for the iPhone named "RPN-70 HD" is also available.

Short manual and sample calculations on the website: www.cuveesoft.ch

## RPN-70 SD Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/da/e0/90/dae09055-97f4-2bfa-cfed-f4b11588901e/1e.png/1242x2208.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/59/dd/08/59dd0820-9917-df90-ed5b-bc956a354b32/2e.png/1242x2208.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/8d/a3/fb/8da3fbf4-479b-9e29-f369-2710bb02a242/3e.png/1242x2208.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/53/93/97/53939779-c425-2638-5867-d24c03d4d663/4e.png/1242x2208.png)

## RPN-70 SD Rating Breakdown in United States
- 5 stars: 9 (82%)
- 4 stars: 1 (9%)
- 3 stars: 1 (9%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## RPN-70 SD Reviews in United States

### ***** "5318008"
55378008
-- alexg1029, 2021-10-31

### ***** "A Very Useful and Classic Tool"
Many sincere thanks to the development team.
-- ColtAuto7, 2021-05-31

### ***** "Amazing! Perfect emulation of a classic calculator"
I have several Cuveesoft calculators and all are excellent. I use the RPN-70 SD for personal finance.
-- DaveB1958, 2019-03-02

### ***** "A Perfect Calculator App"
Perfect RPN App for my needs. Simple interface, but has enough basic financial functions to meet my needs. True to the original. Love the extra memory !
-- Iowa_Florence, 2019-01-24

[View all RPN-70 SD reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)



## RPN-70 SD Discovered Keywords
- rpn calculator free
- 70

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## RPN-70 SD Available In
- [United States](https://apptail.io/app/rpn-70-sd-VmYc/united-states)
- [Germany](https://apptail.io/app/rpn-70-sd-VmYc/germany)
- [Italy](https://apptail.io/app/rpn-70-sd-VmYc/italy)
- [Brazil](https://apptail.io/app/rpn-70-sd-VmYc/brazil)
- [France](https://apptail.io/app/rpn-70-sd-VmYc/france)
- [Austria](https://apptail.io/app/rpn-70-sd-VmYc/austria)
- [Mexico](https://apptail.io/app/rpn-70-sd-VmYc/mexico)
- [United Kingdom](https://apptail.io/app/rpn-70-sd-VmYc/united-kingdom)
- [Netherlands](https://apptail.io/app/rpn-70-sd-VmYc/netherlands)
- [China](https://apptail.io/app/rpn-70-sd-VmYc/china)
- [Türkiye](https://apptail.io/app/rpn-70-sd-VmYc/turkey)
- [Russia](https://apptail.io/app/rpn-70-sd-VmYc/russia)
- [Kazakhstan](https://apptail.io/app/rpn-70-sd-VmYc/kazakhstan)
- [Switzerland](https://apptail.io/app/rpn-70-sd-VmYc/switzerland)
- [Portugal](https://apptail.io/app/rpn-70-sd-VmYc/portugal)
- [Estonia](https://apptail.io/app/rpn-70-sd-VmYc/estonia)
- [Egypt](https://apptail.io/app/rpn-70-sd-VmYc/egypt)
- [Spain](https://apptail.io/app/rpn-70-sd-VmYc/spain)
- [Finland](https://apptail.io/app/rpn-70-sd-VmYc/finland)
- [Greece](https://apptail.io/app/rpn-70-sd-VmYc/greece)
- [Hong Kong SAR China](https://apptail.io/app/rpn-70-sd-VmYc/hong-kong)
- [Hungary](https://apptail.io/app/rpn-70-sd-VmYc/hungary)
- [Indonesia](https://apptail.io/app/rpn-70-sd-VmYc/indonesia)
- [Ireland](https://apptail.io/app/rpn-70-sd-VmYc/ireland)
- [Israel](https://apptail.io/app/rpn-70-sd-VmYc/israel)
- [India](https://apptail.io/app/rpn-70-sd-VmYc/india)
- [Iceland](https://apptail.io/app/rpn-70-sd-VmYc/iceland)
- [Japan](https://apptail.io/app/rpn-70-sd-VmYc/japan)
- [South Korea](https://apptail.io/app/rpn-70-sd-VmYc/south-korea)
- [Kuwait](https://apptail.io/app/rpn-70-sd-VmYc/kuwait)
- [Lebanon](https://apptail.io/app/rpn-70-sd-VmYc/lebanon)
- [Lithuania](https://apptail.io/app/rpn-70-sd-VmYc/lithuania)
- [Luxembourg](https://apptail.io/app/rpn-70-sd-VmYc/luxembourg)
- [Latvia](https://apptail.io/app/rpn-70-sd-VmYc/latvia)
- [Malaysia](https://apptail.io/app/rpn-70-sd-VmYc/malaysia)
- [Nigeria](https://apptail.io/app/rpn-70-sd-VmYc/nigeria)
- [Norway](https://apptail.io/app/rpn-70-sd-VmYc/norway)
- [New Zealand](https://apptail.io/app/rpn-70-sd-VmYc/new-zealand)
- [Panama](https://apptail.io/app/rpn-70-sd-VmYc/panama)
- [Peru](https://apptail.io/app/rpn-70-sd-VmYc/peru)
- [Philippines](https://apptail.io/app/rpn-70-sd-VmYc/philippines)
- [Pakistan](https://apptail.io/app/rpn-70-sd-VmYc/pakistan)
- [Poland](https://apptail.io/app/rpn-70-sd-VmYc/poland)
- [Romania](https://apptail.io/app/rpn-70-sd-VmYc/romania)
- [Saudi Arabia](https://apptail.io/app/rpn-70-sd-VmYc/saudi-arabia)
- [Sweden](https://apptail.io/app/rpn-70-sd-VmYc/sweden)
- [Singapore](https://apptail.io/app/rpn-70-sd-VmYc/singapore)
- [Slovenia](https://apptail.io/app/rpn-70-sd-VmYc/slovenia)
- [Slovakia](https://apptail.io/app/rpn-70-sd-VmYc/slovakia)
- [Thailand](https://apptail.io/app/rpn-70-sd-VmYc/thailand)
- [Tunisia](https://apptail.io/app/rpn-70-sd-VmYc/tunisia)
- [South Africa](https://apptail.io/app/rpn-70-sd-VmYc/south-africa)
- [Argentina](https://apptail.io/app/rpn-70-sd-VmYc/argentina)
- [Australia](https://apptail.io/app/rpn-70-sd-VmYc/australia)
- [Azerbaijan](https://apptail.io/app/rpn-70-sd-VmYc/azerbaijan)
- [Belgium](https://apptail.io/app/rpn-70-sd-VmYc/belgium)
- [Brunei](https://apptail.io/app/rpn-70-sd-VmYc/brunei)
- [Belarus](https://apptail.io/app/rpn-70-sd-VmYc/belarus)
- [Canada](https://apptail.io/app/rpn-70-sd-VmYc/canada)
- [Chile](https://apptail.io/app/rpn-70-sd-VmYc/chile)
- [Colombia](https://apptail.io/app/rpn-70-sd-VmYc/colombia)
- [Czechia](https://apptail.io/app/rpn-70-sd-VmYc/czechia)
- [Denmark](https://apptail.io/app/rpn-70-sd-VmYc/denmark)
- [Dominican Republic](https://apptail.io/app/rpn-70-sd-VmYc/dominican-republic)
- [Algeria](https://apptail.io/app/rpn-70-sd-VmYc/algeria)
- [Ecuador](https://apptail.io/app/rpn-70-sd-VmYc/ecuador)
- [Vietnam](https://apptail.io/app/rpn-70-sd-VmYc/vietnam)
- [United Arab Emirates](https://apptail.io/app/rpn-70-sd-VmYc/united-arab-emirates)
- [Taiwan](https://apptail.io/app/rpn-70-sd-VmYc/taiwan)
- [Ukraine](https://apptail.io/app/rpn-70-sd-VmYc/ukraine)
- [Nepal](https://apptail.io/app/rpn-70-sd-VmYc/nepal)
- [Armenia](https://apptail.io/app/rpn-70-sd-VmYc/armenia)

---

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