# Audio Analyst vs PLC Pro

The clearest difference is price: Audio Analyst at Free against PLC Pro's $9.99. Audio Analyst also leads on device support (4 vs 2). PLC Pro's advantage is in-app purchases (none vs 4). On update cadence, ads and iOS requirement there is nothing between them.

Audio Analyst is free to download; PLC Pro costs $9.99 up front. Audio Analyst sells 4 in-app purchases, starting at $0.99 per month. PLC Pro asks for nothing beyond the download.

Audio Analyst ships an update weekly, PLC Pro every 5 days. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Audio Analyst | PLC Pro |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/audio-analyst/id6478918400/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 47 MB |
| Requires iOS | **15** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [嘉欣 胡](https://appshunter.io/developer/1640395440) | [James Johnson](https://appshunter.io/developer/1861867738) |

## What reviewers say

### 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 |


### PLC Pro

[App page](https://appshunter.io/ios/app/plc-pro/id6757437125)

**In-app purchases:** none


## Frequently asked questions

### Is Audio Analyst free?

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

### Is PLC Pro free?

PLC Pro costs $9.99, with no in-app purchases.

### Do Audio Analyst or PLC Pro have ads?

Neither Audio Analyst nor PLC Pro shows ads.

### Which is updated more often, Audio Analyst or PLC Pro?

Audio Analyst ships an update weekly, and PLC Pro every 5 days. Most recently, Audio Analyst was updated on October 4, 2026 and PLC Pro on October 7, 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.*