# RST Scope vs Audio Analyst

The clearest difference is in-app purchases: RST Scope at none against Audio Analyst's 4. RST Scope also leads on update cadence (every 3 days vs weekly). Audio Analyst's advantage is ads (none vs shown) and device support (4 vs 2). On price, rating, ratings volume and iOS requirement there is nothing between them.

Both are free to download. Audio Analyst sells 4 in-app purchases, starting at $0.99 per month. RST Scope asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for RST Scope against 5.0 for Audio Analyst. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

RST Scope ships an update every 3 days, Audio Analyst weekly. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | RST Scope | Audio Analyst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/rst-scope/id1550582276/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/audio-analyst/id6478918400/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 5 MB | 41 MB |
| Requires iOS | 15.6 | **15** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [嘉欣 胡](https://appshunter.io/developer/1640395440) |

## 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


### Audio Analyst

[App page](https://appshunter.io/ios/app/audio-analyst/id6478918400)

This professional audio analysis software offers a comprehensive suite of measurement tools. It supports spectrum analysis, phase spectrum, audio oscilloscope, and spectrograms, along with recording, playback, and peak measurement functionalities.

**Highlights:** Spectrum analysis, Audio oscilloscope, Spectrogram visualization, Audio recording and playback, Peak measurement, Customizable frequency ranges

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscriptions | $0.99 | per month |
| Quarterly Subscriptions | $1.99 | per 3 months |
| Annual Subscription | $4.99 | per year |
| Permanently Activated Version | $9.99 | one-time |


## Frequently asked questions

### Is RST Scope free?

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

### Is Audio Analyst free?

Audio Analyst is free to download, with in-app purchases available.

### Which has better reviews, RST Scope or Audio Analyst?

RST Scope and Audio Analyst are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do RST Scope or Audio Analyst have ads?

RST Scope shows ads; Audio Analyst does not.

### Which is updated more often, RST Scope or Audio Analyst?

RST Scope ships an update every 3 days, and Audio Analyst weekly. Most recently, RST Scope was updated on October 13, 2026 and Audio Analyst on October 4, 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.*