# Vibration Meter, seismograph vs J

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

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

## The numbers

| Metric | Vibration Meter, seismograph | J |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (729 ratings)](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201/reviews)** | — |
| Number of ratings | **729** | — |
| Positive reviews | 41.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 5 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) | [YUAN YU NIU](https://appshunter.io/developer/6802343658) |

## 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 |


### J

[App page](https://appshunter.io/ios/app/j-camera/id6803582284)

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

**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 J free?

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

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

J shows ads; Vibration Meter, seismograph does not.

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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.*