Morse Words vs RST 599TK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Morse Words
Learn Morse Code with audio-based word drills. This app generates random common English words in International Morse Code, allowing you to practice listening and copying. Adjust speed, tone, and optionally display words for learning.
- Audio Morse Code word learning
- Random word generation
- Adjustable WPM speed
- Customizable dot speed (Farnsworth)
- Adjustable tone frequency
- Optional word display
- Custom word list input
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HotPaw Morse Words is a aid to learning Morse Code. Audio learning can be a great brain exercise. This app can help you learn the sound of entire words in Morse Code. The app is a test generator which randomly picks from 250 very common English words and sends them in International Morse Code audio through your iPhone speaker or headset. The WPM (words per minute) speed can be easily set up to 100 WPM. You can also separately set the dot speed (for Farnsworth method code), and customize the tone frequency. Hit "Start" to start sending random Morse code text. You can choose "Show", to see the words displayed as they are sent to the speaker. This is helpful when first learning. After you are familiar with the sound of the words, you can "Hide" the display of the words sent, and attempt to copy them down on paper as your hear them. Then you can later show them in order to check how many words you copied correctly. Optionally you can paste a custom word list, from 5 to 500 words in length, using the Settings view.
RST 599TK
This application simulates Morse code communication for amateur radio operators. It supports various QSO styles, Morse code input via a touch keyer, and includes a CW decoder. Features allow for speed control, status display, and shortcut keys for common phrases.
- CW QSO simulation
- Electric Touch Keyer input
- Contest style QSO support
- CW Speed Control
- Min-in CW Decoder
- Shortcut keys for CQ and TU
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This app is a real CW QSO simulator for Amateur Radio. "599BK & AADX Contest type QSO" is supported. Input of Morse Codes are by using Electric Touch Keyer. Changing of TX/RX is by SEND button. Supported Min-in CW Decoder too. 【Characteristic】 1. "599BK" and "Contest" style support. 2.Support the CW Speed Control, Reverse of Dot/Dash pad. 3.Status display showing TX / RX operation. 4.Support the space insertion operation both automatic and manual. 5.Support the Min-in CW Decoder function. 6.Support the shortcut-key of CQ and TU. CQ Button function can be set by setting menu. 7.Support the repeat-call function. It works only when the TU button is pressed at the end of the QSO. 8.Support input function by key button 【How to use】 1.The case of CQ Calling Press SEND button Input "CQ CQ DX DE (YOUR CALLSIGN) PSE K" by Touch Keyer. Press SEND button again 2.The case of CQ Answering Press SEND button Input "QRZ DX" by Touch Keyer or Straight Key. Press SEND button again --- Examples of QSO --- [CQ Calling] "CQ CQ DX DE xxnxx xxnxx PSE K" >>> xxnxx DE **n** K "**n** DE xxnxx UR RST 559 BK" >>> R MY RPT 559 UR RST 599 BK "QSL TU" >>> R 73 TU "E E" >>> E E [CQ Ansewing] "QRZ DX" >>> "CQ CQ DE **n** **n** PSE K" "**n** DE xxnxx K" >>> "xxnxx DE **n** UR RST 579 BK" "R **n** DE xxnxx UR RST 599 TU" >>> "R TU" "E E" >>> E E --- DETEC WORDS --- [CQ Calling] CQ CQ DX CQ NA CQ JA [CQ Ansewing] QRZ QRZ DX QRZ NA QRZ JA [BOTH] DE K BK UR RST 73 TU E E etc... 【Example usage video】 - Touch Keyer - https://www.youtube.com/watch?v=CuSEaJtD3KQ - Microphone IN Mode - https://www.youtube.com/watch?v=goN9hVDEGnM
Screenshots
Verdict
The clearest difference is ads: Morse Words at none against RST 599TK's shown. Morse Words also leads on rating (4.4 vs 4.1) and monetization model (free vs ad-supported). RST 599TK's advantage is update cadence (every 6 weeks vs every 12 months) and review sentiment (100% vs 72%). On price, ratings volume, 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.
Morse Words holds the better App Store score, 4.4 against 4.1. Both are backed by a comparable volume of ratings — 26 and 9 respectively. Written reviews complicate that: 72% of Morse Words's written reviews are positive against 100% of RST 599TK's, so the app with the better star average is not the one people write more warmly about.
Morse Words ships an update every 12 months, RST 599TK every 6 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Morse Words | RST 599TK |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (26 ratings) — better | 4.1 (9 ratings) |
| Positive reviews | 72.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 26 — better | 9 |
| Update frequency | Every 12 months | Every 6 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | HotPaw Productions | koji kamogawa |
Customer experience
Morse Words
RST 599TK
In-app purchases
Morse Words
No in-app purchases
RST 599TK
No in-app purchases







