# RST Decoder vs Russian HAM Radio Exam

The clearest difference is in-app purchases: RST Decoder at none against Russian HAM Radio Exam's 10. Russian HAM Radio Exam's advantage is ads (none vs shown) and update cadence (weekly vs every 2 months). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Russian HAM Radio Exam sells 10 one-off in-app purchases. RST Decoder asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for RST Decoder against 5.0 for Russian HAM Radio Exam. 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 92% of Russian HAM Radio Exam's.

RST Decoder ships an update every 2 months, Russian HAM Radio Exam weekly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RST Decoder | Russian HAM Radio Exam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/rst-decoder/id1519587362/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/russian-ham-radio-exam/id1540102667/reviews) |
| Number of ratings | **7** | 3 |
| Positive reviews | 66.7% of reviews | **91.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 6 MB | 28 MB |
| Requires iOS | **17.0** | 17.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Vasilii Dmitriev](https://appshunter.io/developer/1027942334) |

## 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


### Russian HAM Radio Exam

[App page](https://appshunter.io/ios/app/russian-ham-radio-exam/id1540102667)

Prepare for your amateur radio qualification exam with this app. It offers a training mode with hints and an exam mode that simulates the real test, covering all essential topics. Get ready to earn your license and explore the world of HAM radio.

**Highlights:** Training mode with hints, Simulated exam mode, Covers 8 main exam topics, Material from official SRR resource, Practice for CEPT test

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Спасибо от РЛ | $0.99 | one-time |
| Спасибо от РЛ | $1.99 | one-time |
| Спасибо от РЛ | $2.99 | one-time |
| Спасибо от РЛ | $3.99 | one-time |
| Спасибо от РЛ | $4.99 | one-time |
| Спасибо от РЛ | $5.99 | one-time |
| Спасибо от РЛ | $6.99 | one-time |
| Спасибо от РЛ | $7.99 | one-time |
| Спасибо от РЛ | $8.99 | one-time |
| Спасибо от РЛ | $10.99 | one-time |


## Frequently asked questions

### Is RST Decoder free?

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

### Is Russian HAM Radio Exam free?

Russian HAM Radio Exam is free to download, with in-app purchases available.

### Which has better reviews, RST Decoder or Russian HAM Radio Exam?

RST Decoder and Russian HAM Radio Exam are both rated 5.0 out of 5 on the App Store, from 7 and 3 ratings respectively.

### Do RST Decoder or Russian HAM Radio Exam have ads?

RST Decoder shows ads; Russian HAM Radio Exam does not.

### Which is updated more often, RST Decoder or Russian HAM Radio Exam?

RST Decoder ships an update every 2 months, and Russian HAM Radio Exam weekly. Most recently, RST Decoder was updated on October 23, 2026 and Russian HAM Radio Exam on October 24, 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.*