# RST 599 Pro vs OpenShack Morse Code Trainer

The clearest difference is update cadence: OpenShack Morse Code Trainer at every 3 days against RST 599 Pro's every 2 months. RST 599 Pro's advantage is price ($4.99 vs $9.99) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

RST 599 Pro costs $4.99 and OpenShack Morse Code Trainer $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RST 599 Pro ships an update every 2 months, OpenShack Morse Code Trainer every 3 days. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | RST 599 Pro | OpenShack Morse Code Trainer |
| --- | --- | --- |
| Price | **$4.99** | $9.99 |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/rst-599-pro/id1497452984/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 40 MB | 5 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Frank Grossmann e.K.](https://appshunter.io/developer/6812478072) |

## What reviewers say

### RST 599 Pro

[App page](https://appshunter.io/ios/app/rst-599-pro/id1497452984)

This application simulates amateur radio CW QSOs with realistic call signs, signal levels, and speeds. It supports various QSO styles, pile-ups, and includes features like RIT, CW filters, and a spectrum scope for an immersive experience.

**Highlights:** Realistic CW QSO simulation, Pile-up reproduction (up to 5 stations), Multiple QSO style support, RIT and CW filter functions, Spectrum scope display, Customizable call sign and CW speed

**Features:** macOS Compatibility

**In-app purchases:** none


### OpenShack Morse Code Trainer

[App page](https://appshunter.io/ios/app/openshack-morse-code-trainer/id6812478070)

**In-app purchases:** none


## Frequently asked questions

### Is RST 599 Pro free?

RST 599 Pro costs $4.99, with no in-app purchases.

### Is OpenShack Morse Code Trainer free?

OpenShack Morse Code Trainer costs $9.99, with no in-app purchases.

### Do RST 599 Pro or OpenShack Morse Code Trainer have ads?

Neither RST 599 Pro nor OpenShack Morse Code Trainer shows ads.

### Which is updated more often, RST 599 Pro or OpenShack Morse Code Trainer?

RST 599 Pro ships an update every 2 months, and OpenShack Morse Code Trainer every 3 days. Most recently, RST 599 Pro was updated on November 3, 2026 and OpenShack Morse Code Trainer on November 10, 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.*