# Vibration Detector vs Frequency Analyzer

The clearest difference is in-app purchases: Vibration Detector at none against Frequency Analyzer's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Frequency Analyzer sells 2 in-app purchases, starting at $4.99 per month. Vibration Detector asks for nothing beyond the download.

## The numbers

| Metric | Vibration Detector | Frequency Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Size | 2 MB | 2 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jens Rieckhof](https://appshunter.io/developer/354266124) | [RAMAZAN USEN](https://appshunter.io/developer/1783434185) |

## What reviewers say

### Vibration Detector

[App page](https://appshunter.io/ios/app/vibration-detector-earthquake/id6761691401)

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

**In-app purchases:** none


### Frequency Analyzer

[App page](https://appshunter.io/ios/app/frequency-analyzer/id6762404295)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpectraLab Pro Monthly | $4.99 | per month |
| SpectraLab Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is Vibration Detector free?

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

### Is Frequency Analyzer free?

Frequency Analyzer is free to download, with in-app purchases available.

### Do Vibration Detector or Frequency Analyzer have ads?

Neither Vibration Detector nor Frequency Analyzer shows ads.

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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.*