RST 599 vs MorseFlash Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RST 599
This application simulates amateur radio CW QSOs with realistic call signs, signal levels, and CW speeds. It supports various QSO styles, including contest and rubber stamp types, with adjustable settings for a personalized training experience.
- Multiple QSO styles supported
- Realistic signal meter
- Spectrum scope display
- Adjustable CW speed and call sign
- Pile-up simulation
- QRN presence toggle
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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. "599BK","Rubber Stamp"and "AADX Contest" style support. 2.RIT functions support. 3.Realistic signal meter according to audio signal level. 4.Status display showing TX / RX operation. 5.Pile-up supported by 100QSOs/200QSOs (Try Press Class button) 6.The spectrum scope display 【Other features】 1. Function to select the number of QSOs to communicate (5, 20) 2.A function to select the presence or absence (ON / OFF) of QRN 3. Function to select the call area from JA, W/W 4.Easy mode support function (constant pitch / volume) 5.Supported the Rubber Stamp training mode. 6.Supported the ESC button for escaping from the long TX/RX. 7.Supported the Score Clear button of your Hi-Score Data. 8.Support the capture function of Hi-Score dialog.（Does not work on Easy mode.） 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 update cadence: MorseFlash Generator at every 2 weeks against RST 599's every 2 months. On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
RST 599 ships an update every 2 months, MorseFlash Generator every 2 weeks. The most recent releases landed on October 21, 2026 and October 5, 2026 respectively.
| Parameter | RST 599 | MorseFlash Generator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (8 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 41 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | koji kamogawa | SHINICHI OKAMOTO |
In-app purchases
RST 599
No in-app purchases
MorseFlash Generator
No in-app purchases
Questions
Is RST 599 free?
Is MorseFlash Generator free?
Do RST 599 or MorseFlash Generator have ads?
Which is updated more often, RST 599 or MorseFlash Generator?
Other comparisons
