# RST 599x vs MorseFlash Generator

The clearest difference is price: MorseFlash Generator at Free against RST 599x's $1.99. MorseFlash Generator also leads on update cadence (every 2 weeks vs every 2 months). RST 599x's advantage is ads (none vs shown) and iOS requirement (12.0 vs 14.0). On in-app purchases and device support there is nothing between them.

MorseFlash Generator is free to download; RST 599x costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RST 599x ships an update every 2 months, MorseFlash Generator every 2 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RST 599x | MorseFlash Generator |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rst-599x/id1498597799/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 71 MB | 4 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [SHINICHI OKAMOTO](https://appshunter.io/developer/1184823568) |

## What reviewers say

### RST 599x

[App page](https://appshunter.io/ios/app/rst-599x/id1498597799)

This app simulates real-time CW QSO interactions for amateur radio enthusiasts. It offers various QSO styles, realistic signal conditions, and customizable station settings for an authentic experience. Features include pile-up reproduction and RIT/filter functions.

**Highlights:** CW QSO simulation, Pile-up reproduction, Multiple QSO styles, RIT and CW filter, Realistic signal meter, Spectrum scope display

**Features:** macOS Compatibility

**In-app purchases:** none


### MorseFlash Generator

[App page](https://appshunter.io/ios/app/morseflash-generator/id6503596500)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RST 599x free?

RST 599x costs $1.99, with no in-app purchases.

### Is MorseFlash Generator free?

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

### Do RST 599x or MorseFlash Generator have ads?

MorseFlash Generator shows ads; RST 599x does not.

### Which is updated more often, RST 599x or MorseFlash Generator?

RST 599x ships an update every 2 months, and MorseFlash Generator every 2 weeks. Most recently, RST 599x was updated on October 24, 2026 and MorseFlash Generator on October 30, 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.*