RST 599x vs MorseFlash Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RST 599x
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.
- CW QSO simulation
- Pile-up reproduction
- Multiple QSO styles
- RIT and CW filter
- Realistic signal meter
- Spectrum scope display
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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. 【Characteristic】 1. Reproduction of pile-up (Called from up to 3 stations at the same time) 2. "599BK","Rubber Stamp" and "AADX Contest" style support. 3.RIT and CW filter functions Band Width(300Hz/600Hz) control supported. 4.Realistic signal meter according to audio signal level. 5.Status display showing TX / RX operation. 6.The spectrum scope display 【Other features】 1. Function to select the number of QSOs to communicate (5, 20) 2. QRN ON / OFF selection function 3. Function to select the call area (JA's, W / W) 4. Judgement of "RST, QRA and QTH" or "RST, QRA and WX" information. 5.Supported the ESC button for escaping from the long TX/RX. 6.Supported the Score Clear button of your Hi-Score Data. 7.Support the capture function of Hi-Score dialog. 8.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
MorseFlash Generator
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This is an app for practicing receiving Morse code signals. A signal message of 10 to 30 characters is sent with a "start signal." In the settings page, you can switch between sound on/off and the language of the signal messages.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | RST 599x | MorseFlash Generator |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 71 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | koji kamogawa | SHINICHI OKAMOTO |
In-app purchases
RST 599x
No in-app purchases
MorseFlash Generator
No in-app purchases
Questions
Is RST 599x free?
Is MorseFlash Generator free?
Do RST 599x or MorseFlash Generator have ads?
Which is updated more often, RST 599x or MorseFlash Generator?
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