# RPN vs Switchboard ESP

The clearest difference is ads: RPN at none against Switchboard ESP's shown. Switchboard ESP's advantage is update cadence (every 5 days vs every 7 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RPN ships an update every 7 months, Switchboard ESP every 5 days. The most recent releases landed on August 26, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | RPN | Switchboard ESP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (11 ratings)](https://appshunter.io/ios/app/rpn-70-sd/id738422213/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 17 MB | 33 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Smartprocess Colombia SAS](https://appshunter.io/developer/1579121225) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-70-sd/id738422213)

This app is a faithful simulation of a rare 1974 financial calculator, offering all its original functions with enhanced features like more memory registers and a visual stack display. It's designed for users who appreciate vintage technology and need precise financial calculations.

**Highlights:** Photo-realistic vintage calculator design, Full HP-70 function simulation, Animated keys with sound, Enhanced stack and memory register view, Cut/copy/paste display value, Input parameter visual indicators

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Switchboard ESP

[App page](https://appshunter.io/ios/app/switchboard-esp/id6473743945)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

RPN is free to download, with no in-app purchases.

### Is Switchboard ESP free?

Switchboard ESP is free to download, with no in-app purchases.

### Do RPN or Switchboard ESP have ads?

Switchboard ESP shows ads; RPN does not.

### Which is updated more often, RPN or Switchboard ESP?

RPN ships an update every 7 months, and Switchboard ESP every 5 days. Most recently, RPN was updated on August 26, 2026 and Switchboard ESP on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*