# ServerGuard24 vs RPN

The clearest difference is price: ServerGuard24 at Free against RPN's $4.99. RPN's advantage is rating (4.9 vs 2.5) and update cadence (every 3 months vs every 7 months). On review sentiment, ads, in-app purchases and device support there is nothing between them.

ServerGuard24 is free to download; RPN costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RPN holds the better App Store score, 4.9 against 2.5. That said, the two scores are not equally well evidenced: RPN has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

ServerGuard24 ships an update every 7 months, RPN every 3 months. Both last shipped on October 20, 2026.

## The numbers

| Metric | ServerGuard24 | RPN |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [2.5 (2 ratings)](https://appshunter.io/ios/app/serverguard24/id374530285/reviews) | **[4.9 (11 ratings)](https://appshunter.io/ios/app/rpn-97-pro/id816249055/reviews)** |
| Number of ratings | 2 | **11** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | **Free** | Paid |
| Size | 13 MB | 75 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [ServerGuard24 GmbH](https://appshunter.io/developer/374530288) | [CuVee Software](https://appshunter.io/developer/424873503) |

## What reviewers say

### ServerGuard24

[App page](https://appshunter.io/ios/app/serverguard24/id374530285)

Monitor servers, websites, databases, and online services directly from your iPhone. Get real-time status updates, availability, and performance insights for your critical online assets. Ensure your business processes are always running smoothly.

**Highlights:** Availability Monitoring, Performance Monitoring, Business Process Monitoring, 24/7 Downtime Alerts, Real-time Status Updates

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is ServerGuard24 free?

ServerGuard24 is free to download, with no in-app purchases.

### Is RPN free?

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

### Which has better reviews, ServerGuard24 or RPN?

RPN is rated higher. ServerGuard24 averages 2.5 out of 5 from 2 ratings, while RPN averages 4.9 from 11 ratings.

### Do ServerGuard24 or RPN have ads?

Neither ServerGuard24 nor RPN shows ads.

### Which is updated more often, ServerGuard24 or RPN?

ServerGuard24 ships an update every 7 months, and RPN every 3 months. Most recently, ServerGuard24 was updated on October 20, 2026 and RPN 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.*