# Map vs RST Decoder

The clearest difference is ads: Map at none against RST Decoder's shown. Map also leads on device support (3 vs 1) and iOS requirement (8.0 vs 17.0). On price, update cadence 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Map | RST Decoder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/rst-decoder/id1519587362/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Ad-supported |
| Size | 127 MB | 6 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Digital Confections LLC](https://appshunter.io/developer/480077374) | [koji kamogawa](https://appshunter.io/developer/1488210713) |

## What reviewers say

### Map

[App page](https://appshunter.io/ios/app/map-n-compass/id691748599)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Map free?

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

### Is RST Decoder free?

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

### Do Map or RST Decoder have ads?

RST Decoder shows ads; Map does not.

### Which is updated more often, Map or RST Decoder?

Map ships an update every 2 months, and RST Decoder every 2 months. Most recently, Map was updated on September 30, 2026 and RST Decoder on October 6, 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.*