# N+Motion vs Vibration Meter, seismograph

The clearest difference is in-app purchases: N+Motion at none against Vibration Meter, seismograph's 1. N+Motion also leads on update cadence (every 6 weeks vs every 7 months) and rating (5.0 vs 4.7). Vibration Meter, seismograph's advantage is ratings volume (729 vs 1). 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. N+Motion asks for nothing beyond the download.

N+Motion 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 729 ratings behind it against 1, so its average is the more settled of the two.

N+Motion ships an update every 6 weeks, Vibration Meter, seismograph every 7 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | N+Motion | Vibration Meter, seismograph |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/n-plus-motion/id689068119/reviews)** | [4.7 (729 ratings)](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201/reviews) |
| Number of ratings | 1 | **729** |
| Positive reviews | — | 41.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 18 MB |
| Requires iOS | **8.4** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Variable Technologies LLC](https://appshunter.io/developer/569541572) | [ExaMobile S.A.](https://appshunter.io/developer/506014841) |

## What reviewers say

### N+Motion

[App page](https://appshunter.io/ios/app/n-plus-motion/id689068119)

This application captures and digitizes real-world motion using a 9DOF IMU sensor. It's designed for applications in fitness, logistics, vibration analysis, and gaming, providing accurate orientation and movement data.

**Highlights:** Measures nine degrees of motion, 9DOF IMU sensor, 3-axis gyroscope, accelerometer, magnetometer, Accurate orientation and movement tracking, Mobile sensing capabilities

**Features:** macOS Compatibility, 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 N+Motion free?

N+Motion 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, N+Motion or Vibration Meter, seismograph?

N+Motion is rated higher. N+Motion averages 5.0 out of 5 from 1 ratings, while Vibration Meter, seismograph averages 4.7 from 729 ratings.

### Do N+Motion or Vibration Meter, seismograph have ads?

Neither N+Motion nor Vibration Meter, seismograph shows ads.

### Which is updated more often, N+Motion or Vibration Meter, seismograph?

N+Motion ships an update every 6 weeks, and Vibration Meter, seismograph every 7 months. Most recently, N+Motion was updated on October 23, 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.*