# Watch Sensor Logger vs Motion Sensor Analyzer Tool

The clearest difference is in-app purchases: Watch Sensor Logger at none against Motion Sensor Analyzer Tool's 3. Motion Sensor Analyzer Tool's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 25 months). On price, monetization model, device support and iOS requirement there is nothing between them.

Both are free to download. Motion Sensor Analyzer Tool sells 3 in-app purchases, starting at $2.99 per month. Watch Sensor Logger asks for nothing beyond the download.

Watch Sensor Logger ships an update every 25 months, Motion Sensor Analyzer Tool every 2 weeks. The most recent releases landed on August 8, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Watch Sensor Logger | Motion Sensor Analyzer Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/motion-sensor-analyzer-tool/id6499396038/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 25 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 17 MB | 12 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [yuya kanbetsunawa](https://appshunter.io/developer/1597026161) | [Thiem Nguyen](https://appshunter.io/developer/1658699065) |

## What reviewers say

### Watch Sensor Logger

[App page](https://appshunter.io/ios/app/watch-sensor-logger/id1634449655)

Log detailed motion and GPS data from your Apple Watch. Export sensor readings like acceleration, attitude, and location as a CSV file for analysis. This app is exclusively designed for Apple Watch.

**Highlights:** Log sensor data, GPS tracking, Export to CSV, Acceleration logging, Attitude data, Time stamping

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Motion Sensor Analyzer Tool

[App page](https://appshunter.io/ios/app/motion-sensor-analyzer-tool/id6499396038)

This app transforms your iPhone into a professional motion data logger. Record accelerometer, gyroscope, and magnetometer data simultaneously, visualize it with interactive charts, and export it in CSV or JSON format for detailed analysis. Organize and compare recordings to gain insights into motion patterns.

**Highlights:** Record accelerometer, gyroscope, magnetometer, Up to 200Hz sampling rate, Interactive real-time charts, Export data as CSV and JSON, Organize recordings with sessions and collections, Compare multiple recordings, Background recording (Pro feature)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Motion Sensor Pro – Monthly | $2.99 | per month |
| Motion Sensor Pro – Yearly | $19.99 | per year |
| Motion Sensor Pro – Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Watch Sensor Logger free?

Watch Sensor Logger is free to download, with no in-app purchases.

### Is Motion Sensor Analyzer Tool free?

Motion Sensor Analyzer Tool is free to download, with in-app purchases available.

### Do Watch Sensor Logger or Motion Sensor Analyzer Tool have ads?

Watch Sensor Logger shows ads; Motion Sensor Analyzer Tool does not.

### Which is updated more often, Watch Sensor Logger or Motion Sensor Analyzer Tool?

Watch Sensor Logger ships an update every 25 months, and Motion Sensor Analyzer Tool every 2 weeks. Most recently, Watch Sensor Logger was updated on August 8, 2026 and Motion Sensor Analyzer Tool on September 21, 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.*