RST Decoder vs Morse Hub
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 Hub
This app helps aspiring ham radio operators learn and master Morse code. It offers adjustable speed and timing, practice modes for copying and sending, and realistic QSO simulations to prepare users for on-air communication.
- Learn Morse code characters
- Adjustable speed and Farnsworth timing
- Practice copying words and characters
- Sending practice with virtual straight key
- Realistic QSO simulations
- Customizable practice modes
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Morse Hub is a complete CW training app for new and aspiring ham radio operators. Whether you're just learning the alphabet or preparing for your first on-air QSO, Morse Hub guides you every step of the way. FEATURES: -Learn Morse Code — Master every character with adjustable speed and Farnsworth timing, the proven method used by experienced CW operators worldwide. -Improve My Code — Practice copying words, numbers, punctuation, and mixed characters at speeds you control. -Practice Copying — See exactly where you're missing characters with a three-strike reveal system, then use CUSTOM mode to focus practice on your weak letters. -Sending Practice — Develop your sending technique with a virtual straight key and multiple drill modes including letters, words, phrases, and full QSO simulations. -Realistic QSO Mode — Practice complete ham radio contacts with authentic callsigns, RST reports, and proper operating procedures. Want more? Morse Hub Complete offers advanced features, including FreeSend mode, the Full QSO Experience with realistic simulated two-way audio contacts, Koch method learning, Custom Words and Phrases, and QSO error check review — available now on the App Store and Google Play Visit the Morse Hub YouTube channel for tutorials. Master the Code.
Screenshots
Verdict
The clearest difference is ads: Morse Hub at none against RST Decoder's shown. Morse Hub also leads on review sentiment (100% vs 67%) and update cadence (weekly vs every 2 months). RST Decoder's advantage is monetization model (ad-supported vs paid). On price, rating, ratings volume and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for RST Decoder against 5.0 for Morse Hub. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews are what separate them: 67% of RST Decoder's written reviews are positive against 100% of Morse Hub's.
RST Decoder ships an update every 2 months, Morse Hub weekly. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.
| Parameter | RST Decoder | Morse Hub |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) | 5.0 (3 ratings) |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 3 |
| Update frequency | Every 2 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | koji kamogawa | Thomas Sullivan |
Customer experience
RST Decoder
Morse Hub
In-app purchases
RST Decoder
No in-app purchases
Morse Hub
No in-app purchases









