Comparison

RST Decoder vs Morse Code Translator

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

Head to head
About

RST Decoder

This application decodes Morse code from your microphone, acting as a practice tool to verify your keying accuracy. It offers advanced features like BPF and FFT decoders with automatic frequency and gain control, allowing for fine-tuning of reception parameters.

Highlights
  • Microphone Morse code decoding
  • Morse practice and keying check
  • BPF and FFT decoder options
  • Auto Frequency Detector (AFD)
  • Auto Gain Control (AGC)
  • Real-time CW signal display
  • Input signal recording/playback
Read full description

This is an App that decodes Morse code input from the microphone. It is a Morse practice App that you can use to check if you are keying the correct code. Signals with good S/N can be decoded correctly, but signals with bad S/N cannot be decoded correctly. Also, the performance will be degraded for extremely slow or fast signals. Usually about 5 to 10 characters are required for speed synchronization of Morse Code. Adjust the input signal so that the peak value changes from level 6 to level 7. Make fine adjustments to each parameter according to the reception status. [Additional Functions] -In addition to the decoder using BPF, a new decoder using FFT has been added so that it can be switched according to the usage. -AFD (Auto Frequency Detector) function has been added to the decoder using BPF, and BPF can be set automatically by pressing the AFD button. -The decoder using FFT automatically follows the strongest signal in the band by AFD (Auto Frequency Detector) and AGC (Auto Gain Control). You can also hold the AFD / AGC parameters by pressing the Lock button. * There will be a time lag of about 1 to 2 seconds for AFD tracking. [Control parameters] 1. Audio Input Level 2.BPF ON/OFF 3.BPF of Center Frequency 4.BPF of Band Width 5.CW Speed Control ON/OFF 6.CW Speed Control Low, Mid1, Mid2 or High 7.Delete All Decoded Text 8.Realtime CW Signal Display 9.Input signal recording / playback function *Japanese/KANA text is not supported. [Note] Since the signal after BPF is output to the audio output, it can also be used as an AF-CW filter. [URL of this App working example video] https://youtu.be/Pwp7W4m-m34

About

Morse Code Translator

Learn Morse code with a comprehensive translator and trainer. Master characters using the Koch method, practice through various modes, and translate messages using your device's flashlight, screen, or audio.

Highlights
  • Koch method learning curriculum
  • Morse code translation
  • Practice modes: audio, visual, tapping
  • Signal via flashlight, screen pulse, or audio
  • Adjustable speed and timing controls
  • Detailed progress tracking
  • Offline functionality
Features
Read full description

Glint is the modern way to learn Morse code – a beautifully crafted translator and trainer that takes you from complete beginner to QSO-ready ham radio operator in roughly 13 hours of practice. THE KOCH METHOD – LEARN LIKE THE PROS Master Morse code using the same method trusted by amateur radio operators worldwide. Our structured Koch curriculum introduces characters at full speed from day one, training your brain to recognize patterns by ear – not by counting dots and dashes. • 6 achievement milestones from First Steps to QSO Ready • Target speed: 15 WPM (words per minute) – real ham radio pace • Track mastery across all 41 characters, numbers, and punctuation • Per-character accuracy, response time, and progress tracking FOUR WAYS TO PRACTICE Choose the learning style that works for you: • Audio to Letter – Hear the tone, identify the character (recommended by pros) • Morse to Letter – See the pattern, select the answer • Letter to Morse – See the letter, tap it out yourself • Word Recognition – Build real comprehension, not just memorization TRANSLATE & SIGNAL Turn your iPhone into a Morse code transmitter: • Tap dots and dashes to compose messages • Signal via flashlight, screen pulse, or audio tone • Three pulse colors including red for night vision • Automatic letter and word boundary detection • Support for prosigns like SOS, AR, and SK PRECISION TIMING Fine-tune your practice with professional-grade controls: • Farnsworth timing – faster characters, slower spacing for learners • Speed presets: Chill (15), Train (20), Fast (25) WPM • Adjustable audio frequency for comfortable listening • Haptic feedback option for tactile learning TRACK YOUR PROGRESS Stay motivated with detailed statistics: • Current streak and all-time best • Session accuracy and lifetime totals • Visual progress grid for all characters • Minutes practiced and challenges completed BEAUTIFULLY DESIGNED Two stunning themes crafted for focus: • Dark mode with animated night sky and glowing orb • Light mode with warm, distraction-free tones • Smooth animations and intuitive gesture controls PRIVACY FIRST • Works completely offline • No account required • Your progress stays on your device Whether you're preparing for your amateur radio license, adding a survival skill to your toolkit, or simply fascinated by this timeless communication method – Glint is your companion on the journey. Download now and tap your first message tonight.

Screenshots

RST Decoder4 screens
Morse Code Translator4 screens

Verdict

The call

The clearest difference is in-app purchases: RST Decoder at none against Morse Code Translator's 2. RST Decoder also leads on rating (5.0 vs 4.7). Morse Code Translator's advantage is ads (none vs shown). On price, ratings volume, update cadence 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. Morse Code Translator sells 2 in-app purchases, starting at $3.99 per 7 days. RST Decoder asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RST Decoder holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

UpkeepUpdate frequency

RST Decoder ships an update every 2 months, Morse Code Translator every 5 weeks. The most recent releases landed on September 8, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
RST Decoder versus Morse Code Translator: the parameters behind the verdict, then further details
ParameterRST DecoderMorse Code Translator
PriceFreeFree
Rating5.0 (7 ratings) — better4.7 (3 ratings)
Positive reviews66.7% of reviews
Number of ratings7 — better3
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better17.6
Further details — not scored
Size6 MB16 MB
Age rating17+4+
Developerkoji kamogawaDrobinin Limited

Customer experience

RST Decoder

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Morse Code Translator

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RST Decoder

No in-app purchases

2 purchases

Morse Code Translator

Subscriptions2
  • Full Morse Course3 Days trial$3.997 Days
  • Full Morse Course$34.991 Year

Questions

Is RST Decoder free?
RST Decoder is free to download, with no in-app purchases.
Is Morse Code Translator free?
Morse Code Translator is free to download, with in-app purchases available.
Which has better reviews, RST Decoder or Morse Code Translator?
RST Decoder is rated higher. RST Decoder averages 5.0 out of 5 from 7 ratings, while Morse Code Translator averages 4.7 from 3 ratings.
Do RST Decoder or Morse Code Translator have ads?
RST Decoder shows ads; Morse Code Translator does not.
Which is updated more often, RST Decoder or Morse Code Translator?
RST Decoder ships an update every 2 months, and Morse Code Translator every 5 weeks. Most recently, RST Decoder was updated on September 8, 2026 and Morse Code Translator on September 23, 2026.

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