# G vs Sensor

The clearest difference is in-app purchases: Sensor at none against G's 2. G's advantage is update cadence (every 4 days vs every 2 months) and iOS requirement (14.7 vs 26.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. G sells 2 one-off in-app purchases. Sensor asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.9 for G against 4.0 for Sensor. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews are what separate them: 50% of G's written reviews are positive against 56% of Sensor's.

G ships an update every 4 days, Sensor every 2 months. The most recent releases landed on July 4, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | G | Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/g-field-recorder/id1154585693/reviews) | **[4.0 (4 ratings)](https://appshunter.io/ios/app/sensor-app/id1466399692/reviews)** |
| Number of ratings | **7** | 4 |
| Positive reviews | 50.0% of reviews | **55.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 35 MB | 40 MB |
| Requires iOS | **14.7** | 26.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Stratos Perception, LLC](https://appshunter.io/developer/721934057) | [Volker Schmitt](https://appshunter.io/developer/1466399691) |

## What reviewers say

### G

[App page](https://appshunter.io/ios/app/g-field-recorder/id1154585693)

This app records and analyzes motion data from your device's sensors, including acceleration, rotation, and GPS information. It's designed for experiments, performance analysis, and tracking various movements. Data can be exported in CSV format and is resistant to loss.

**Highlights:** Logs and plots motion data (acceleration, rotation), Records ground speed, altitude, distance, and displacement, Virtually unlimited recording time, Programmable data acquisition control, Remote control via Apple Watch, Configurable acceleration reference frame, Export data in CSV format

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multi-Plot | $0.99 | one-time |
| Professional | $3.99 | one-time |


### 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


## Frequently asked questions

### Is G free?

G is free to download, with in-app purchases available.

### Is Sensor free?

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

### Which has better reviews, G or Sensor?

Sensor is rated higher. G averages 3.9 out of 5 from 7 ratings, while Sensor averages 4.0 from 4 ratings.

### Do G or Sensor have ads?

Neither G nor Sensor shows ads.

### Which is updated more often, G or Sensor?

G ships an update every 4 days, and Sensor every 2 months. Most recently, G was updated on July 4, 2026 and Sensor on September 10, 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.*