# Vibration Meter, seismograph vs 3

The clearest difference is review sentiment: 3 at 100% against Vibration Meter, seismograph's 42%. 3 also leads on in-app purchases (none vs 1) and rating (5.0 vs 4.7). Vibration Meter, seismograph's advantage is ratings volume (733 vs 1) and iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Vibration Meter, seismograph sells 1 one-off in-app purchase. 3 asks for nothing beyond the download.

3 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Vibration Meter, seismograph has 733 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 42% of Vibration Meter, seismograph's written reviews are positive against 100% of 3's.

## The numbers

| Metric | Vibration Meter, seismograph | 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (733 ratings)](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/3-13info/id6804035678/reviews)** |
| Number of ratings | **733** | 1 |
| Positive reviews | 42.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 18 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ExaMobile S.A.](https://appshunter.io/developer/506014841) | [Carl Erickson](https://appshunter.io/developer/6792901408) |

## 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 |


### 3

[App page](https://appshunter.io/ios/app/3-13info/id6804035678)

This app simplifies scoring for the card game Three-Thirteen (3-13). It features round-by-round entry, dealer rotation, wild card reminders, and player statistics. Enjoy private, offline play with no ads or tracking.

**Highlights:** Round-by-round score entry, Dealer rotation and wild card reminders, Mark who went out, Series play options, Player statistics and standings, Player profiles with avatars, Backup and restore functionality, Built-in game rules and house rules

**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 3 free?

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

### Which has better reviews, Vibration Meter, seismograph or 3?

3 is rated higher. Vibration Meter, seismograph averages 4.7 out of 5 from 733 ratings, while 3 averages 5.0 from 1 ratings.

### Do Vibration Meter, seismograph or 3 have ads?

Neither Vibration Meter, seismograph nor 3 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.*