# Device Motion Detective vs Vibration Meter, seismograph

The clearest difference is rating: Vibration Meter, seismograph at 4.7 against Device Motion Detective's 1.0. Vibration Meter, seismograph also leads on review sentiment (42% vs 0%) and ratings volume (729 vs 1). Device Motion Detective's advantage is in-app purchases (none vs 1). On price, update cadence, ads and device support there is nothing between them.

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

Vibration Meter, seismograph holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Vibration Meter, seismograph has 729 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Device Motion Detective's written reviews are positive against 42% of Vibration Meter, seismograph's.

Device Motion Detective ships an update every 13 months, Vibration Meter, seismograph every 7 months. The most recent releases landed on October 7, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Device Motion Detective | Vibration Meter, seismograph |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/device-motion-detective/id884501447/reviews) | **[4.7 (729 ratings)](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201/reviews)** |
| Number of ratings | 1 | **729** |
| Positive reviews | 0.0% of reviews | **41.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 7 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 18 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [方 沈](https://appshunter.io/developer/882296318) | [ExaMobile S.A.](https://appshunter.io/developer/506014841) |

## What reviewers say

### Device Motion Detective

[App page](https://appshunter.io/ios/app/device-motion-detective/id884501447)

This utility app captures and stores detailed device motion data, including accelerometer, gyroscope, and magnetometer readings. Users can view real-time motion graphs or past records saved to the database. Data is recorded every second for up to 20 minutes per session.

**Highlights:** Raw accelerometer data recording, Raw gyroscope data recording, Raw magnetometer data recording, Processed device-motion data, Real-time motion graphs, Past motion record viewing, Data saved to database

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Device Motion Detective free?

Device Motion Detective is free to download, with no in-app purchases.

### Is Vibration Meter, seismograph free?

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

### Which has better reviews, Device Motion Detective or Vibration Meter, seismograph?

Vibration Meter, seismograph is rated higher. Device Motion Detective averages 1.0 out of 5 from 1 ratings, while Vibration Meter, seismograph averages 4.7 from 729 ratings.

### Do Device Motion Detective or Vibration Meter, seismograph have ads?

Neither Device Motion Detective nor Vibration Meter, seismograph shows ads.

### Which is updated more often, Device Motion Detective or Vibration Meter, seismograph?

Device Motion Detective ships an update every 13 months, and Vibration Meter, seismograph every 7 months. Most recently, Device Motion Detective was updated on October 7, 2026 and Vibration Meter, seismograph on October 26, 2026.

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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.*