Comparison

Morse Words vs RST 599TK

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • CW QSO simulation
  • Electric Touch Keyer input
  • Contest style QSO support
  • CW Speed Control
  • Min-in CW Decoder
  • Shortcut keys for CQ and TU
Read full description

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

Morse Words1 screens
RST 599TK4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Morse Words versus RST 599TK: the parameters behind the verdict, then further details
ParameterMorse WordsRST 599TK
PriceFreeFree
Rating4.4 (26 ratings) — better4.1 (9 ratings)
Positive reviews72.2% of reviews100.0% of reviews — better
Number of ratings26 — better9
Update frequencyEvery 12 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.4 — better15.0
Further details — not scored
Size1 MB36 MB
Age rating4+4+
DeveloperHotPaw Productionskoji kamogawa

Customer experience

Morse Words

All ratings25 ratings
Positive84.0%
Neutral8.0%
Negative8.0%
Written reviews36 reviews
Positive72.2%
Neutral19.4%
Negative8.3%

RST 599TK

All ratings9 ratings
Positive77.8%
Neutral11.1%
Negative11.1%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Morse Words

No in-app purchases

None

RST 599TK

No in-app purchases

Questions

Is Morse Words free?
Morse Words is free to download, with no in-app purchases.
Is RST 599TK free?
RST 599TK is free to download, with no in-app purchases.
Which has better reviews, Morse Words or RST 599TK?
Morse Words is rated higher. Morse Words averages 4.4 out of 5 from 26 ratings, while RST 599TK averages 4.1 from 9 ratings.
Do Morse Words or RST 599TK have ads?
RST 599TK shows ads; Morse Words does not.
Which is updated more often, Morse Words or RST 599TK?
Morse Words ships an update every 12 months, and RST 599TK every 6 weeks. Most recently, Morse Words was updated on November 1, 2026 and RST 599TK on November 3, 2026.

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