# Watch Sensor Logger vs AGG

The clearest difference is ads: AGG at none against Watch Sensor Logger's shown. AGG also leads on update cadence (every 4 months vs every 25 months) and iOS requirement (15.6 vs 17.0). On price, in-app purchases and device support there is nothing between them.

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

Watch Sensor Logger ships an update every 25 months, AGG every 4 months. The most recent releases landed on August 8, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Watch Sensor Logger | AGG |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 25 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 17 MB | 57 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yuya kanbetsunawa](https://appshunter.io/developer/1597026161) | [Shenzhen Miaoxiang intelligent Co., LTD](https://appshunter.io/developer/1436399965) |

## 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


### AGG

[App page](https://appshunter.io/ios/app/agg/id6757631479)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Watch Sensor Logger free?

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

### Is AGG free?

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

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

Watch Sensor Logger shows ads; AGG does not.

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

Watch Sensor Logger ships an update every 25 months, and AGG every 4 months. Most recently, Watch Sensor Logger was updated on August 8, 2026 and AGG on September 24, 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.*