# RST Decoder vs Morse Code

The clearest difference is in-app purchases: RST Decoder at none against Morse Code's 4. RST Decoder also leads on rating (5.0 vs 4.6). Morse Code's advantage is ads (none vs shown) and update cadence (every 5 days vs every 2 months). On price and review sentiment there is nothing between them.

Both are free to download. Morse Code sells 4 in-app purchases, starting at $0.99 per month. RST Decoder asks for nothing beyond the download.

RST Decoder holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Morse Code has 241 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 67% of RST Decoder's written reviews are positive against 69% of Morse Code's, so the app with the better star average is not the one people write more warmly about.

RST Decoder ships an update every 2 months, Morse Code every 5 days. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | RST Decoder | Morse Code |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/rst-decoder/id1519587362/reviews)** | [4.6 (241 ratings)](https://appshunter.io/ios/app/morse-code-morse-master/id1664039661/reviews) |
| Number of ratings | 7 | **241** |
| Positive reviews | 66.7% of reviews | **68.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 6 MB | 45 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [亚娟 秦](https://appshunter.io/developer/1539395142) |

## 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 Code

[App page](https://appshunter.io/ios/app/morse-code-morse-master/id1664039661)

Learn and master Morse code with this app. It features AI-powered audio decoding, interactive practice games, and a comprehensive code table. Customize your learning experience and track your progress.

**Highlights:** AI audio decoding, Practice games, Morse code table, Bidirectional translation, Customizable settings, Progress tracking

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Morse Master PRO Monthly | $0.99 | per month |
| Morse Master PRO Annual | $2.99 | per year |
| Unlock full version | $0.99 | one-time |
| Morse Master PRO Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is RST Decoder free?

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

### Is Morse Code free?

Morse Code is free to download, with in-app purchases available.

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

RST Decoder is rated higher. RST Decoder averages 5.0 out of 5 from 7 ratings, while Morse Code averages 4.6 from 241 ratings.

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

RST Decoder shows ads; Morse Code does not.

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

RST Decoder ships an update every 2 months, and Morse Code every 5 days. Most recently, RST Decoder was updated on October 6, 2026 and Morse Code on October 9, 2026.

---

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