# Easy Audio Spectrogram vs Vgent PdM

The clearest difference is in-app purchases: Easy Audio Spectrogram at none against Vgent PdM's 2. Vgent PdM's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Vgent PdM sells 2 in-app purchases, starting at $99.00 per month. Easy Audio Spectrogram asks for nothing beyond the download.

Easy Audio Spectrogram ships an update every 3 weeks, Vgent PdM every 4 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Easy Audio Spectrogram | Vgent PdM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 4 MB | 27 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chen Gong](https://appshunter.io/developer/1896464770) | [Shandong Yichuang Zhiwei Intelligent Technology Co., Ltd.](https://appshunter.io/developer/1872584423) |

## What reviewers say

### Easy Audio Spectrogram

[App page](https://appshunter.io/ios/app/easy-audio-spectrogram/id6772611741)

**Features:** macOS Compatibility

**In-app purchases:** none


### Vgent PdM

[App page](https://appshunter.io/ios/app/vgent-pdm/id6788021336)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vgent Vibration Monthly | $99.00 | per month |
| Vgent Vibration Annual | $999.00 | per year |


## Frequently asked questions

### Is Easy Audio Spectrogram free?

Easy Audio Spectrogram is free to download, with no in-app purchases.

### Is Vgent PdM free?

Vgent PdM is free to download, with in-app purchases available.

### Do Easy Audio Spectrogram or Vgent PdM have ads?

Neither Easy Audio Spectrogram nor Vgent PdM shows ads.

### Which is updated more often, Easy Audio Spectrogram or Vgent PdM?

Easy Audio Spectrogram ships an update every 3 weeks, and Vgent PdM every 4 days. Most recently, Easy Audio Spectrogram was updated on November 5, 2026 and Vgent PdM on November 10, 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.*