# Magnetometer・Magnetic Field vs G

The clearest difference is rating: G at 3.7 against Magnetometer・Magnetic Field's 1.0. G also leads on in-app purchases (none vs 2) and update cadence (every 4 days vs every 3 months). Magnetometer・Magnetic Field's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Magnetometer・Magnetic Field sells 2 in-app purchases, starting at $7.99 per 7 days. G asks for nothing beyond the download.

G holds the better App Store score, 3.7 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Magnetometer・Magnetic Field ships an update every 3 months, G every 4 days. Both last shipped on October 16, 2026.

## The numbers

| Metric | Magnetometer・Magnetic Field | G |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/magnetometermagnetic-field/id6759484882/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/g-force-meter-plus-accelerometer/id6760181285/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 102 MB | 53 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [ZeroPlay Ltd.](https://appshunter.io/developer/1500119722) | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) |

## What reviewers say

### Magnetometer・Magnetic Field

[App page](https://appshunter.io/ios/app/magnetometermagnetic-field/id6759484882)

This app visualizes your phone's magnetic field sensor readings, showing deviations from a calibrated baseline. It features a live waveform, haptic feedback for peaks, and adjustable sensitivity for detailed analysis.

**Highlights:** Magnetic field deviation from baseline, Live waveform display, Haptic feedback for peaks, Adjustable sensitivity levels, Peak count and duration summaries, Calibration for local baseline

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $7.99 | per 7 days |
| Monthly | $19.99 | per month |


### G

[App page](https://appshunter.io/ios/app/g-force-meter-plus-accelerometer/id6760181285)

Measure real-time G-forces on three axes with a precision crosshair display. Track peak G, acceleration history, and impact forces. Ideal for car performance, roller coasters, aviation, and physics experiments.

**Highlights:** 3-axis G-force tracking, Precision crosshair display, Peak G detection, Real-time chart recording, G-force level guide, Adjustable sensitivity

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

**In-app purchases:** none


## Frequently asked questions

### Is Magnetometer・Magnetic Field free?

Magnetometer・Magnetic Field is free to download, with in-app purchases available.

### Is G free?

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

### Which has better reviews, Magnetometer・Magnetic Field or G?

G is rated higher. Magnetometer・Magnetic Field averages 1.0 out of 5 from 1 ratings, while G averages 3.7 from 3 ratings.

### Do Magnetometer・Magnetic Field or G have ads?

Both Magnetometer・Magnetic Field and G show ads.

### Which is updated more often, Magnetometer・Magnetic Field or G?

Magnetometer・Magnetic Field ships an update every 3 months, and G every 4 days. Most recently, Magnetometer・Magnetic Field was updated on October 16, 2026 and G on October 16, 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.*