Comparison

RST Decoder vs Morse Code Translator App

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 App

Translate text to Morse code and Morse code back to text in real-time. Share your translated messages easily with friends. Features include sound and vibration feedback, and the ability to use the flashlight for transmission.

Highlights
  • Real-time translation
  • Morse to text translation
  • Text to Morse translation
  • International Morse Code standard
  • Flashlight transmission
  • Sound and vibration feedback
  • Copy and paste functionality
Features
Read full description

Turn words into real Morse signals instantly with audio, screen flash, and interactive Morse training — all inside a sleek modern experience designed for beginners, radio enthusiasts, students, sailors, and signal lovers. Whether you want to learn Morse code, send secret signals, practice recognition, or simply explore one of the most iconic communication systems ever created, Morse Code Translator App makes it fast, visual, and fun. FEATURES * Instant Text → Morse Translation Convert words, phrases, and messages into accurate Morse code in real time. * Morse → Text Decoder Paste Morse signals and instantly decode them back into readable text. * Audio Transmission Play authentic Morse tones with adjustable speed and frequency controls. * Screen Flash Signals Transmit Morse visually using your screen brightness and flashing effects. * Interactive Morse Game Train your ears and reflexes with a modern signal recognition game. * Morse Guide & Codebook Browse letters, numbers, symbols, and Morse patterns in a clean reference system. * Adjustable Transmission Settings Customize: Words per minute (WPM) Tone frequency Dot duration Audio waveform * Save Your Favorite Signals Quickly store and revisit important Morse phrases. * Modern Dark UI Premium-inspired design optimized for focus, readability, and low-light environments. * Premium Upgrade Unlock: Unlimited transmissions Full Morse training game Complete guide access Ad-free experience Unlimited translations Perfect for: Morse beginners Ham radio fans Maritime enthusiasts Aviation signal learners Emergency communication practice Puzzle and cipher lovers Students and hobbyists Download now and start mastering the language of signals. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

RST Decoder4 screens
Morse Code Translator App3 screens

Verdict

The call

The clearest difference is review sentiment: RST Decoder at 67% against Morse Code Translator App's 0%. RST Decoder also leads on rating (5.0 vs 1.0) and in-app purchases (none vs 3). Morse Code Translator App's advantage is ads (none vs shown) and device support (3 vs 1). On price 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 App sells 3 in-app purchases, starting at $5.99 per month. 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 1.0. That said, the two scores are not equally well evidenced: RST Decoder has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of RST Decoder's written reviews are positive against 0% of Morse Code Translator App's.

UpkeepUpdate frequency

RST Decoder ships an update every 2 months, Morse Code Translator App every 12 months. The most recent releases landed on September 8, 2026 and August 12, 2026 respectively.

Scorecard9 real differences · 1 level
RST Decoder versus Morse Code Translator App: the parameters behind the verdict, then further details
ParameterRST DecoderMorse Code Translator App
PriceFreeFree
Rating5.0 (7 ratings) — better1.0 (1 ratings)
Positive reviews66.7% of reviews — better0.0% of reviews
Number of ratings7 — better1
Update frequencyEvery 2 months — betterEvery 12 months
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supportedFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size6 MB53 MB
Age rating17+4+
Developerkoji kamogawaLeticia Vila

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 App

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

RST Decoder

No in-app purchases

3 purchases

Morse Code Translator App

Subscriptions2
  • Morse Premium$5.991 Month
  • Morse Premium Annual$19.991 Year
One-time1
  • Morse Premium Lifetime$24.99

Questions

Is RST Decoder free?
RST Decoder is free to download, with no in-app purchases.
Is Morse Code Translator App free?
Morse Code Translator App is free to download, with in-app purchases available.
Which has better reviews, RST Decoder or Morse Code Translator App?
RST Decoder is rated higher. RST Decoder averages 5.0 out of 5 from 7 ratings, while Morse Code Translator App averages 1.0 from 1 ratings.
Do RST Decoder or Morse Code Translator App have ads?
RST Decoder shows ads; Morse Code Translator App does not.
Which is updated more often, RST Decoder or Morse Code Translator App?
RST Decoder ships an update every 2 months, and Morse Code Translator App every 12 months. Most recently, RST Decoder was updated on September 8, 2026 and Morse Code Translator App on August 12, 2026.

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