# RST Decoder vs Morse ICR

The clearest difference is rating: RST Decoder at 5.0 against Morse ICR's 4.0. RST Decoder also leads on review sentiment (67% vs 50%) and update cadence (every 2 months vs every 4 months). Morse ICR's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RST Decoder holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews point the same way: 67% of RST Decoder's written reviews are positive against 50% of Morse ICR's.

RST Decoder ships an update every 2 months, Morse ICR every 4 months. The most recent releases landed on October 6, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | RST Decoder | Morse ICR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/rst-decoder/id1519587362/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/morse-icr/id6736839333/reviews) |
| Number of ratings | **7** | 4 |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Ad-supported | **Free** |
| Size | 6 MB | 1 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Jouni Erola](https://appshunter.io/developer/295758397) |

## What reviewers say

### RST Decoder

[App page](https://appshunter.io/ios/app/rst-decoder/id1519587362)

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

**In-app purchases:** none


### Morse ICR

[App page](https://appshunter.io/ios/app/morse-icr/id6736839333)

This app helps you learn Morse code by sound through interactive practice and real-time audio feedback. It offers a progressive learning system, customizable sessions, and streak tracking to build your confidence and mastery.

**Highlights:** Interactive keyboard input, Visual learning cues, Progressive character introduction, Customizable practice sessions, Streak tracking, Comprehensive statistics, Adaptive difficulty

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RST Decoder free?

RST Decoder is free to download, with no in-app purchases.

### Is Morse ICR free?

Morse ICR is free to download, with no in-app purchases.

### Which has better reviews, RST Decoder or Morse ICR?

RST Decoder is rated higher. RST Decoder averages 5.0 out of 5 from 7 ratings, while Morse ICR averages 4.0 from 4 ratings.

### Do RST Decoder or Morse ICR have ads?

RST Decoder shows ads; Morse ICR does not.

### Which is updated more often, RST Decoder or Morse ICR?

RST Decoder ships an update every 2 months, and Morse ICR every 4 months. Most recently, RST Decoder was updated on October 6, 2026 and Morse ICR on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*