# RST Decoder Pro vs SnapClass

The clearest difference is price: SnapClass at Free against RST Decoder Pro's $1.99. SnapClass also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On ads and in-app purchases there is nothing between them.

SnapClass is free to download; RST Decoder Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | RST Decoder Pro | SnapClass |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rst-decoder-pro/id1521025545/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Paid | — |
| Size | 1 MB | 40 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Bekir CAGLAR](https://appshunter.io/developer/1874957215) |

## What reviewers say

### RST Decoder Pro

[App page](https://appshunter.io/ios/app/rst-decoder-pro/id1521025545)

This application decodes Morse code from your device's microphone, offering two decoding methods (BPF and FFT) with adjustable parameters. It includes features like automatic frequency detection, gain control, and real-time signal display for accurate Morse code practice and reception.

**Highlights:** Microphone Morse code decoding, BPF and FFT decoding methods, Auto Frequency Detector (AFD), Auto Gain Control (AGC), Real-time CW signal display, Waterfall display (Pro version), Adjustable control parameters

**In-app purchases:** none


### SnapClass

[App page](https://appshunter.io/ios/app/snapclass-organize-notes/id6759003746)

**In-app purchases:** none


## Frequently asked questions

### Is RST Decoder Pro free?

RST Decoder Pro costs $1.99, with no in-app purchases.

### Is SnapClass free?

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

### Do RST Decoder Pro or SnapClass have ads?

Neither RST Decoder Pro nor SnapClass shows ads.

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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.*