# Vibration Meter, seismograph vs Calculate

The clearest difference is in-app purchases: Calculate at none against Vibration Meter, seismograph's 1. Vibration Meter, seismograph's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price and ads there is nothing between them.

Both are free to download. Vibration Meter, seismograph sells 1 one-off in-app purchase. Calculate asks for nothing beyond the download.

## The numbers

| Metric | Vibration Meter, seismograph | Calculate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (730 ratings)](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201/reviews)** | — |
| Number of ratings | **730** | — |
| Positive reviews | 42.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 2 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ExaMobile S.A.](https://appshunter.io/developer/506014841) | [Simon Dinh](https://appshunter.io/developer/6781219291) |

## What reviewers say

### Vibration Meter, seismograph

[App page](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201)

This application uses your phone's accelerometer to measure and record vibrations from various sources, including earthquakes and everyday objects. It displays ground motion on a graph and uses an instrumental intensity scale for analysis. You can also monitor and share your measurement results.

**Highlights:** Measures vibration strength, Detects seismic waves, Uses accelerometer for analysis, Displays ground motion graph, Utilizes instrumental intensity scale, Monitors and shares results

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### Calculate

[App page](https://appshunter.io/ios/app/calculate/id6781219049)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vibration Meter, seismograph free?

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

### Is Calculate free?

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

### Do Vibration Meter, seismograph or Calculate have ads?

Neither Vibration Meter, seismograph nor Calculate 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.*