# RST 599 Pro — CW QSO Simulator

> Amateur radio CW QSO simulator with realistic signal and call sign variations. (iPhone/iPad app by koji kamogawa.)

- Source: https://appshunter.io/ios/app/rst-599-pro/id1497452984 (this page in markdown: same URL + `.md`)
- Developer: [koji kamogawa](https://appshunter.io/developer/1488210713)
- Category: Education, Entertainment
- Price: $4.99
- Rating: 4.00/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 40 MB
- Languages: American English
- Released: 2020-02-06
- Data updated: 2026-06-03
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/rst-599-pro/id1497452984/reviews.md

## What is RST 599 Pro?

This app is a real CW QSO simulator for Amateur Radio. "599BK type QSO", "Rubber stamp type QSO" and "Contest type QSO" are supported. In addition, the call sign, signal level, CW speed, etc. that occur differ for each QSO in order to achieve realism. Furthermore, the call sign and CW speed of your own station that issues CQ can be set arbitrarily.

【Main features】
1. Reproduction of "pile-up"
   Called from up to 5 stations simultaneously.
2. "599BK","Rubber Stamp" and "AADX Contest" style support.
3.RIT and CW filter functions 
   Band Width(100-999Hz) control supported.
4.Landscape display support.
5.Realistic signal meter according to audio signal level.
6.Status display showing TX / RX operation.
7.The spectrum scope display

【Other features】
1. Select the number of QSOs to communicate.
    You can choose from 5,10,20,50,100.
2. Ability to select QRN.
    You can choose None, Weak, Norm, Hard.
3. Function to select Callsign Area.
    You can choose from JA's USA's or W / W.
4. Function to select SideTone.
5. Synchronized with CW BandPassFilter. 
6. Judgement of "RST, QRA and QTH" or "RST, QRA and WX" information.
7.Supported the ESC button from the long TX/RX.
8.Supported the Score Clear button of Hi-Score.
9.Support the capture function of Hi-Score dialog.
10.Supported the QSB in the mode of "599BK / AADX" and "W/W"

Supported keyboard input from Apple Silicon Mac. (Not compatible with iOS)
[Support Key]
A-Z, 0-9, /
Enter:return
ESC:esc
BS:delete
CQ:UpArrow
AGN:DownArrow
TU:[
LEFT:LeftArrow
RIGHT:RightArrow

## Key features

- 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

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/rst-599-pro/id1497452984/reviews.md

### 2/5 — バグキーっぽいのは何故？

*2021-02-19, version 2.4.0*

とても良いソフトなのですが、何故かバグキーっぽいキーイングで、頭が欠けたりします。早いキーイングだと単点が消え気味になって、他の出来が良いだけに実に残念です。改善されれば星5つですね。

### 5/5 — リアルで良いのですが一点だけ

*2020-06-16, version 2.0.0*

素晴らしいアプリありがとうございます。
ノイズも含めて。この環境、ありがたいんです。
解決済20200617
  相手のコールサインを受信して入力する。
  正解ならば良いのですが、間違ってAGNし
  て、相手コールサインを書き換えできないの
  です。バックスペース入れて修正しても
  enterすると前の文字列が残ってしまい
  どんどん追加されて長くなっていきます。
   利用機iPhoneXです。
以上解決済20200617(素早いコメントバッグと対応感謝です)

追伸20200616
やはりダメです、応答するため相手のコールサインを打ち込みますが、BSで一見削除されたように見えるのですが、enterとか他の操作をすると、BSした後、元の文字列と修正した文字列が足されて表示されます。どんどん長くなっていきます。iosは最新です。

追伸20200617
素早いご対応ありがとうございました。
今ほど一旦削除して再度インストールしたところ症状は出ませんでした。ありがとうございました。これからしっかり活用させて戴きます。感謝です。

## Frequently asked questions about RST 599 Pro

### What is RST 599 Pro?

RST 599 Pro is a CW QSO simulator for amateur radio. It aims to provide a realistic experience by varying call signs, signal levels, and CW speeds for each simulated contact.

### What types of QSOs does RST 599 Pro support?

RST 599 Pro supports "599BK type QSO", "Rubber stamp type QSO", and "Contest type QSO" (specifically "AADX Contest" style).

### Can RST 599 Pro simulate multiple callers?

Yes, RST 599 Pro can reproduce a "pile-up" by simulating calls from up to 5 stations simultaneously.

### What audio features are included in RST 599 Pro?

The app includes RIT and CW filter functions with adjustable bandwidth (100-999Hz). It also features a realistic signal meter and a spectrum scope display.

### How much does RST 599 Pro cost?

RST 599 Pro is a paid application priced at $4.99.

### What devices is RST 599 Pro compatible with?

RST 599 Pro is supported on iPhone and iPod. It also supports keyboard input from Apple Silicon Macs, but is not compatible with iOS.

### How often is RST 599 Pro updated?

The latest version, 4.4.0, was last updated on March 21, 2026. This indicates a history of updates, though the specific frequency is not detailed.

### Does RST 599 Pro have ads?

No, RST 599 Pro does not contain advertisements. It is a paid application without any ad support.

## Version history (last 5 releases)

### 4.4.0 — 2026-03-21

Improved stability.

### 4.2.0 — 2026-01-31

Fixed for iPhone Max model.

### 4.1.0 — 2025-12-22

Improved stability and screen-resolution compatibility.

### 4.0.0 — 2024-06-09

Supported the German Keyboard Layout.

### 3.8.0 — 2024-01-19

Supported keyboard input from Apple Silicon Mac. (Not compatible with iOS)
[Support Key]
A-Z, 0-9, /
Enter:return
ESC:esc
BS:delete
CQ:UpArrow
AGN:DownArrow
TU:[
LEFT:LeftArrow
RIGHT:RightArrow

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## More apps by koji kamogawa

- [UkeDrum](https://appshunter.io/ios/app/ukedrum/id1488210714)
- [RST 599](https://appshunter.io/ios/app/rst-599/id1488919851)
- [WabunMorse](https://appshunter.io/ios/app/wabunmorse/id1490745806)
- [音耳せん](https://appshunter.io/ios/app/id1496478545)
- [RST 599x](https://appshunter.io/ios/app/rst-599x/id1498597799)

All apps by koji kamogawa: https://appshunter.io/developer/1488210713

## Related topics

[rst 599 pro](https://appshunter.io/ios/topics/rst-599-pro) · [rst 599](https://appshunter.io/ios/topics/rst-599)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-03.*