RST Decoder vs Morse Decoded
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
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.
- 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
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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
Verdict
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
Both are free to download. Morse Decoded sells 1 one-off in-app purchase. RST Decoder asks for nothing beyond the download.
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.
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.
| Parameter | RST Decoder | Morse Decoded |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) | 5.0 (6 ratings) |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 6 |
| Update frequency | Every 2 months — better | Every 27 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 6 MB | 47 MB |
| Age rating | 17+ | 4+ |
| Developer | koji kamogawa | Henry Abrahamsen |
Customer experience
RST Decoder
Morse Decoded
In-app purchases
RST Decoder
No in-app purchases
Morse Decoded
- Premium$0.99
Questions
Is RST Decoder free?
Is Morse Decoded free?
Which has better reviews, RST Decoder or Morse Decoded?
Do RST Decoder or Morse Decoded have ads?
Which is updated more often, RST Decoder or Morse Decoded?
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