# RST Scope vs HamLogJP

The clearest difference is ads: HamLogJP at none against RST Scope's shown. RST Scope's advantage is iOS requirement (15.6 vs 26.0). On price, update cadence, in-app purchases and device support 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 3 days. The most recent releases landed on October 9, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | RST Scope | HamLogJP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rst-scope/id1550582276/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Ad-supported | — |
| Size | 5 MB | 4 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Hashimoto Yoshikazu](https://appshunter.io/developer/6790925881) |

## What reviewers say

### RST Scope

[App page](https://appshunter.io/ios/app/rst-scope/id1550582276)

This utility app provides spectrum scope and waterfall displays for amateur radio operators. It enhances radios lacking these features by analyzing microphone input, allowing for clear distinction of Morse code and detailed audio frequency visualization.

**Highlights:** Spectrum scope and waterfall display, Morse code distinction via FFT, Adjustable waterfall speed, Adjustable audio input level, Switchable display band (wide/narrow), Display pause function, Recording and playback of input sound

**In-app purchases:** none


### HamLogJP

[App page](https://appshunter.io/ios/app/hamlogjp/id6790925699)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RST Scope free?

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

### Is HamLogJP free?

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

### Do RST Scope or HamLogJP have ads?

RST Scope shows ads; HamLogJP does not.

### Which is updated more often, RST Scope or HamLogJP?

RST Scope ships an update every 3 days, and HamLogJP every 3 days. Most recently, RST Scope was updated on October 9, 2026 and HamLogJP on September 30, 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.*