# Sensor vs Watch Sensor Logger

The clearest difference is ads: Sensor at none against Watch Sensor Logger's shown. Sensor also leads on update cadence (every 2 months vs every 25 months). Watch Sensor Logger's advantage is iOS requirement (17.0 vs 26.0). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sensor ships an update every 2 months, Watch Sensor Logger every 25 months. The most recent releases landed on September 10, 2026 and August 8, 2026 respectively.

## The numbers

| Metric | Sensor | Watch Sensor Logger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/sensor-app/id1466399692/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | **55.6% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 25 months |
| Monetization | Free | Free |
| Size | 40 MB | 17 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Volker Schmitt](https://appshunter.io/developer/1466399691) | [yuya kanbetsunawa](https://appshunter.io/developer/1597026161) |

## What reviewers say

### Sensor

[App page](https://appshunter.io/ios/app/sensor-app/id1466399692)

Access and utilize all your device's sensors with this comprehensive tool. Explore GPS, gyroscope, acceleration, magnetometer, altimeter, and attitude data for various applications and research.

**Highlights:** Access GPS for precise location, Utilize gyroscope for orientation, Measure acceleration and movement, Detect magnetic fields with magnetometer, Access altimeter and pressure data, Monitor device attitude (roll, pitch, yaw)

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Sensor free?

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

### Is Watch Sensor Logger free?

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

### Do Sensor or Watch Sensor Logger have ads?

Watch Sensor Logger shows ads; Sensor does not.

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

Sensor ships an update every 2 months, and Watch Sensor Logger every 25 months. Most recently, Sensor was updated on September 10, 2026 and Watch Sensor Logger on August 8, 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.*