# RST Decoder — user reviews

> 6 indexed App Store user reviews of RST Decoder by koji kamogawa, rated 5.00/5 from 7 ratings.

- Source: https://appshunter.io/ios/app/rst-decoder/id1519587362/reviews
- App overview in markdown: https://appshunter.io/ios/app/rst-decoder/id1519587362.md
- Rating breakdown: 5★ 7 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 0

## Most critical reviews (6 lowest-rated)

### 1/5 — Pretty bad

*2021-05-14*

Has potential but it has too much difficulty unless your going extremely slow, at 15 wpm it’s mistaking x for k and y which sound nothing like eachother and t gets mistaken for e and the other way around. Just not viable for anything serious, humans can do it as good or better than this 100% of the time. Maybe if there was a custom wpm option to put in your actual key speed it might have an easier time but I need to pause for about a second between each letter for it to process them. Most people don’t send much slower than 15 wpm so this isn’t the solution to your problems.

**Developer response:** I am very sorry for pretty bad review.
At first, you should understand that this App is for a Morse practice App that you can use to check if you are keying the correct code for the Morse Beginner.
I understand this app is not for actual operation, and Auto mode of CW Speed algorithm is not enough.For general use, CW Speed of Mid1 or Mid2 is better than Audo.
And as you may know the Audio Level detection has bad too.
But, I will intend to improve this App a little by bit because of user being.

### 1/5 — Doesn’t work at all

*2020-10-06*

Won’t load

**Developer response:** "Won't load" is the first report.
1.Are you using the Ad block tool?
2.Does the Internet connection dead?
If 1 or 2 is Yes, this app does not operate correctly.
Please check your environment.

### 5/5 — Works well!

*2023-01-17*

After a few minutes to see what it’s all about, it showed the noise and code clearly.  A bit of fiddling and I was copying nice code, as well as some pricy software.
Of course, signal fading and bursts of occasional QRM would lose the code as most others also do.
I will work more with this one, and so far I am very satisfied!

**Developer response:** Thanks for your comment and five stars. 
I need a time, but I will try to improve the decoding function.

### 5/5 — Idiot hams don’t know how to use it.

*2022-06-22*

If you think that this will copy someone with a bad fist, you’re an idiot. It does well with a strong signal and a good fist, as it should. The two decoding algorithms, Work well, even with QRN. If you don’t like what it does, then decode by ear, but go get a hearing aid, because you can’t hear like you did when you were in your 20s.

**Developer response:** Thanks for your comment and five stars.

### 5/5 — FFT Addition,  great addition.

*2021-11-05*

I am enjoying this CW tool more and more.   Thank you for all the thought put into it. 

73. ve3myz

**Developer response:** Thanks for good review.
I am trying to improve the algorithm of decoder, stay tuned.
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I'm glad you're happy. (^_^)

### 5/5 — Works great

*2021-10-22*

Works great for practicing and making sure I’m keying right, one thing I would like to see in this app is the ability to have the app in landscape.

**Developer response:** Thanks for your good comments.
OK, I will try to study for implementation of the landscape mode.
Please wait a while.
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Landscape mode is supported in Ver2.2.0.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*