# RST Decoder vs QRQ CW

The clearest difference is rating: RST Decoder at 5.0 against QRQ CW's 4.3. RST Decoder also leads on in-app purchases (none vs 1) and review sentiment (67% vs 33%). QRQ CW's advantage is ads (none vs shown) and device support (3 vs 1). On price, ratings volume and update cadence there is nothing between them.

Both are free to download. QRQ CW sells 1 one-off in-app purchase. RST Decoder asks for nothing beyond the download.

RST Decoder holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 7 and 7 respectively. Written reviews point the same way: 67% of RST Decoder's written reviews are positive against 33% of QRQ CW's.

RST Decoder ships an update every 2 months, QRQ CW every 3 months. The most recent releases landed on September 8, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | RST Decoder | QRQ CW |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/rst-decoder/id1519587362/reviews)** | [4.3 (7 ratings)](https://appshunter.io/ios/app/qrq-cw/id6447576515/reviews) |
| Number of ratings | 7 | 7 |
| Positive reviews | **66.7% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 6 MB | 6 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Ake Liljenberg](https://appshunter.io/developer/1681828547) |

## 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


### QRQ CW

[App page](https://appshunter.io/ios/app/qrq-cw/id6447576515)

Enhance your Morse Code reception speed with this convenient app. Practice daily for a few minutes to improve your skills with high-quality audio and accurate timing. A demo version offers full features with limited practice words, allowing you to try it before purchasing additional content.

**Highlights:** Improve Morse Code reception speed, Premium audio quality, Accurate Morse code timing, Adjustable speed from 15 to 60 WPM, Farnsworth timing options, Customizable preferences

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Content Access | $2.99 | one-time |


## Frequently asked questions

### Is RST Decoder free?

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

### Is QRQ CW free?

QRQ CW is free to download, with in-app purchases available.

### Which has better reviews, RST Decoder or QRQ CW?

RST Decoder is rated higher. RST Decoder averages 5.0 out of 5 from 7 ratings, while QRQ CW averages 4.3 from 7 ratings.

### Do RST Decoder or QRQ CW have ads?

RST Decoder shows ads; QRQ CW does not.

### Which is updated more often, RST Decoder or QRQ CW?

RST Decoder ships an update every 2 months, and QRQ CW every 3 months. Most recently, RST Decoder was updated on September 8, 2026 and QRQ CW on July 5, 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.*