Comparison

RST MR vs Morse Code Trainer

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

Head to head
About

RST MR

Features
Read full description

This app is a practice app for memorization reception, which can be said to be essential for Morse reception. Memorization reception is also called "delayed reception", and it is a method of interpreting the heard Morse code with a delay after listening to the Morse code for several characters, instead of interpreting it immediately (writing it on paper etc). It is not necessary for receiving low-speed Morse code, but it is an essential reception technique for receiving some high-speed Morse code. [App features] 1. The code length generated is a minimum of 5 characters and a maximum of 20 characters, in units of 1 character. It can be set arbitrarily. 2. The minimum number of delayed characters is 1 and the maximum is 10 characters. However, it cannot be set longer than the code length to be generated. 3. Use the in-app keyboard until you reach the set number of delayed characters. Even if you enter characters, the input operation will be ignored. 4. The generated code is "alphabet only" or "alphabet" You can select either "+ number". To select "alphabet + number", select the number check box. 5. The dial tone of the generated Morse code can be changed with the "Frequency" slide bar. (Variable range: 300Hz-900Hz) 6. The speed of the generated Morse code can be changed with the "Speed" slide bar. (Variable range: 10CPM to 150CPM) 7. The speed of the generated Morse code can be changed with the "Volume" slide bar. You can also adjust with the volume button on the main unit. [How to use the app] 1. Set the "code length" and "delayed character". * At first, "code length: 5 delayed characters: 1" is recommended 2. Set "Frequency", "Speed" and "Volume". * "Frequency: 600Hz", "Speed: 50-60CPM", "Volume" are optional 3. When you press "START", you will hear the Morse code, so you can use the app Enter the code with the keyboard. However, during the number of characters of "delayed characters", memorize without inputting and the number of characters When you reach, enter from the first letter you memorized. 4. If you cannot hear the characters of "code length" length, press "AGN". The Morse code was heard from the beginning again, so enter the correct characters. 5. Finally press "Enter" 6. Press "Enter" to score, and after a certain amount of time, the next Morse code You will hear it, so enter the code on the keyboard of the app in the same way. 7. If you make a mistake in the input characters, you can correct them using "BS" and etc. When the operation for 8.10 questions is completed, the scoring result pop-up will be displayed.

About

Morse Code Trainer

Features
Read full description

Every inch of the screen is your straight key. Press anywhere to send โ€” it lights up and plays a sidetone. RECEIVE โ€” the Koch method with Farnsworth timing. Start with two characters at real-world speed (15-25 WPM) and unlock the next at 90% accuracy, through 40 levels. The answer pad shows only the characters you have learned, so there is nothing to second-guess. SEND โ€” real-time decoding with automatic dit/dah calibration. Watch yourself descend the Morse code tree with every keypress: hold for left, tap for right, with dot and dash waypoints always showing where the next press leads. Targets grow from single letters to common CW abbreviations and callsigns. CHART โ€” the full alphabet, numbers and punctuation. Tap any row to hear it at your configured speed and tone. SETTINGS โ€” character speed 15-25 WPM, effective (Farnsworth) speed 5-15 WPM, sidetone 400-1000 Hz, key haptics. Volume follows the silent switch. PRICING โ€” all training features are free, with no ads. A one-time Pro (Supporter Pack) purchase adds alternate app icons, theme colors and a 30-day progress chart. Everything stays on your device โ€” no account, no tracking, fully offline.

Screenshots

RST MR4 screens
Morse Code Trainer4 screens

Verdict

The call

The clearest difference is in-app purchases: RST MR at none against Morse Code Trainer's 1. RST MR also leads on iOS requirement (15.0 vs 17.0). Morse Code Trainer's advantage is ads (none vs shown) and update cadence (every 6 days vs every 3 months). On price and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Morse Code Trainer sells 1 one-off in-app purchase. RST MR asks for nothing beyond the download.

UpkeepUpdate frequency

RST MR ships an update every 3 months, Morse Code Trainer every 6 days. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

Scorecard4 real differences ยท 2 level
RST MR versus Morse Code Trainer: the parameters behind the verdict, then further details
ParameterRST MRMorse Code Trainer
PriceFreeFree
Update frequencyEvery 3 monthsEvery 6 days โ€” better
AdsYesNo โ€” better
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPod โ€” betteriPhone
Requires iOS15.0 โ€” better17.0
Further details โ€” not scored
Size10 MB1 MB
Age rating4+4+
Developerkoji kamogawaTAKUYA KONO

In-app purchases

None

RST MR

No in-app purchases

1 purchases

Morse Code Trainer

One-time1
  • Pro (Supporter Pack)$3.99

Questions

Is RST MR free?
RST MR is free to download, with no in-app purchases.
Is Morse Code Trainer free?
Morse Code Trainer is free to download, with in-app purchases available.
Do RST MR or Morse Code Trainer have ads?
RST MR shows ads; Morse Code Trainer does not.
Which is updated more often, RST MR or Morse Code Trainer?
RST MR ships an update every 3 months, and Morse Code Trainer every 6 days. Most recently, RST MR was updated on October 17, 2026 and Morse Code Trainer on October 8, 2026.

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