# RPN vs DarkReader Web

The clearest difference is update cadence: RPN at every 3 months against DarkReader Web's every 22 months. RPN also leads on iOS requirement (12.0 vs 17.6). DarkReader Web's advantage is price ($2.99 vs $4.99). On ads, in-app purchases and device support there is nothing between them.

RPN costs $4.99 and DarkReader Web $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RPN ships an update every 3 months, DarkReader Web every 22 months. Both last shipped on October 20, 2026.

## The numbers

| Metric | RPN | DarkReader Web |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | **[4.9 (11 ratings)](https://appshunter.io/ios/app/rpn-97-pro/id816249055/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 22 months |
| Monetization | Paid | — |
| Size | 75 MB | 2 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Jorge Lucioni Charalla](https://appshunter.io/developer/1198674844) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-97-pro/id816249055)

This app simulates a legendary 1970s programmable calculator, offering advanced features for scientists and engineers. It allows users to run programs, manage virtual cards, and access hundreds of free program cards from its website.

**Highlights:** Virtual program and data cards, Virtual paper tape printer, Database-driven card manager, Create, label, and organize unlimited cards, Effortless saving of card collections, Formatted program listings, Live display of stack and registers

**Features:** macOS Compatibility

**In-app purchases:** none


### DarkReader Web

[App page](https://appshunter.io/ios/app/darkreader-web/id6468196871)

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

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

RPN costs $4.99, with no in-app purchases.

### Is DarkReader Web free?

DarkReader Web costs $2.99, with no in-app purchases.

### Do RPN or DarkReader Web have ads?

Neither RPN nor DarkReader Web shows ads.

### Which is updated more often, RPN or DarkReader Web?

RPN ships an update every 3 months, and DarkReader Web every 22 months. Most recently, RPN was updated on October 20, 2026 and DarkReader Web on October 20, 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.*