# Vibration meter vs Alerta Azor

The clearest difference is in-app purchases: Alerta Azor at none against Vibration meter's 2. Alerta Azor also leads on iOS requirement (12.0 vs 16.0). Vibration meter's advantage is device support. On price there is nothing between them.

Both are free to download. Vibration meter sells 2 in-app purchases, starting at $0.99 per month. Alerta Azor asks for nothing beyond the download.

## The numbers

| Metric | Vibration meter | Alerta Azor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (14 ratings)](https://appshunter.io/ios/app/vibration-meter-seismometer/id1373632255/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 30 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | **iPhone, iPad, Apple Watch** | — |
| Age rating | 4+ | 17+ |
| Developer | [MYSTIC MOBILE APPS LLC](https://appshunter.io/developer/1481942662) | [CFBD S.A.C](https://appshunter.io/developer/1679010743) |

## What reviewers say

### Vibration meter

[App page](https://appshunter.io/ios/app/vibration-meter-seismometer/id1373632255)

Measure the strength of vibrations, tremors, and earthquakes using your phone's built-in seismograph. Visualize seismic movements on graphs, receive real-time Mercalli scale readings, and get instant alerts for seismic shocks. Data can be saved and shared for analysis.

**Highlights:** High-accuracy seismometer, Seismic wave detection, Detailed graphical analysis, Real-time Mercalli scale readings, Instant alerts for seismic shocks, Effortless data autosave, Apple Watch compatibility

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Vibration meter+ | $0.99 | per month |
| Annual Vibration meter+ | $5.99 | per year |


### Alerta Azor

[App page](https://appshunter.io/ios/app/alerta-azor/id6472827570)

**In-app purchases:** none


## Frequently asked questions

### Is Vibration meter free?

Vibration meter is free to download, with in-app purchases available.

### Is Alerta Azor free?

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

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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.*