# SonusVue vs RST Scope

The clearest difference is rating: RST Scope at 5.0 against SonusVue's 1.0. RST Scope also leads on update cadence (every 3 days vs every 18 months). SonusVue's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, 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.

RST Scope holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

SonusVue ships an update every 18 months, RST Scope every 3 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SonusVue | RST Scope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/sonusvue/id1245323501/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rst-scope/id1550582276/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Every 3 days** |
| Monetization | **Free** | Ad-supported |
| Size | 31 MB | 5 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IRISS Inc](https://appshunter.io/developer/1245323320) | [koji kamogawa](https://appshunter.io/developer/1488210713) |

## What reviewers say

### SonusVue

[App page](https://appshunter.io/ios/app/sonusvue/id1245323501)

This utility analyzes real-time audio frequencies, allowing users to record, play back, and visualize sound signals. It offers adjustable sampling rates and detailed spectrum display options, including logarithmic scales and FFT resolution.

**Highlights:** Real-time frequency analysis, Record and playback audio, Adjustable sampling frequency, Logarithmic scale spectrum display, Configurable FFT resolution, User-configurable spectrum averaging

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is SonusVue free?

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

### Is RST Scope free?

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

### Which has better reviews, SonusVue or RST Scope?

RST Scope is rated higher. SonusVue averages 1.0 out of 5 from 1 ratings, while RST Scope averages 5.0 from 1 ratings.

### Do SonusVue or RST Scope have ads?

RST Scope shows ads; SonusVue does not.

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

SonusVue ships an update every 18 months, and RST Scope every 3 days. Most recently, SonusVue was updated on November 2, 2026 and RST Scope on November 3, 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.*