Comparison

RST Decoder vs Morse Decoded

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 Decoded

Learn and practice Morse code with interactive stories and dedicated training modes for tapping, listening, and reading. Features adjustable difficulty, a text-to-Morse translator, and progress tracking with badges.

Highlights
  • Stories Mode for realistic transmissions
  • Tapping, Listening, and Reading practice modes
  • Adjustable WPM and Farnsworth timing
  • Text-to-Morse translator
  • Quick reference dictionary
  • Progress tracking with badges and stats
Features
Read full description

Explore the communication style of the 19th and 20th centuries with a modern tool built for learning. • Stories Mode: Read and tap through practical stories. Get a sense of what it was like to send and receive realistic transmissions. • Practice Suite: Dedicated modes for Tapping (sending), Listening (receiving), and Reading (visual). • Adjustable Difficulty: Full control over WPM and Farnsworth timing so you can learn at your own pace. • Utilities: Includes a text-to-Morse translator and a quick reference dictionary. • Progress Tracking: Earn badges and see your stats improve over time.

Screenshots

RST Decoder4 screens
Morse Decoded4 screens

Verdict

The call

The clearest difference is in-app purchases: RST Decoder at none against Morse Decoded's 1. RST Decoder also leads on update cadence (every 2 months vs every 27 months). Morse Decoded's advantage is review sentiment (100% vs 67%) and device support (3 vs 1). On price, rating, ratings volume and ads 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 Decoded sells 1 one-off in-app purchase. RST Decoder asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for RST Decoder against 5.0 for Morse Decoded. Both are backed by a comparable volume of ratings — 7 and 6 respectively. Written reviews are what separate them: 67% of RST Decoder's written reviews are positive against 100% of Morse Decoded's.

UpkeepUpdate frequency

RST Decoder ships an update every 2 months, Morse Decoded every 27 months. The most recent releases landed on September 8, 2026 and September 9, 2026 respectively.

Scorecard6 real differences · 4 level
RST Decoder versus Morse Decoded: the parameters behind the verdict, then further details
ParameterRST DecoderMorse Decoded
PriceFreeFree
Rating5.0 (7 ratings)5.0 (6 ratings)
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings7 — better6
Update frequencyEvery 2 months — betterEvery 27 months
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size6 MB47 MB
Age rating17+4+
Developerkoji kamogawaHenry Abrahamsen

Customer experience

RST Decoder

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

Morse Decoded

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RST Decoder

No in-app purchases

1 purchases

Morse Decoded

One-time1
  • Premium$0.99

Questions

Is RST Decoder free?
RST Decoder is free to download, with no in-app purchases.
Is Morse Decoded free?
Morse Decoded is free to download, with in-app purchases available.
Which has better reviews, RST Decoder or Morse Decoded?
RST Decoder and Morse Decoded are both rated 5.0 out of 5 on the App Store, from 7 and 6 ratings respectively.
Do RST Decoder or Morse Decoded have ads?
Both RST Decoder and Morse Decoded show ads.
Which is updated more often, RST Decoder or Morse Decoded?
RST Decoder ships an update every 2 months, and Morse Decoded every 27 months. Most recently, RST Decoder was updated on September 8, 2026 and Morse Decoded on September 9, 2026.

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