# Magnetic Detector, Stud Finder vs Magnetic Sensor

The clearest difference is in-app purchases: Magnetic Sensor at none against Magnetic Detector, Stud Finder's 4. Magnetic Sensor also leads on update cadence (fortnightly vs every 2 months). Magnetic Detector, Stud Finder's advantage is device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Magnetic Detector, Stud Finder sells 4 in-app purchases, starting at $4.99 per 7 days. Magnetic Sensor asks for nothing beyond the download.

Magnetic Detector, Stud Finder ships an update every 2 months, Magnetic Sensor fortnightly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Magnetic Detector, Stud Finder | Magnetic Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (444 ratings)](https://appshunter.io/ios/app/magnetic-detector-stud-finder/id1403751803/reviews)** | — |
| Number of ratings | **444** | — |
| Positive reviews | 90.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 25 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jose Bello](https://appshunter.io/developer/1013437387) | [Seonggon Sim](https://appshunter.io/developer/1565259950) |

## What reviewers say

### Magnetic Detector, Stud Finder

[App page](https://appshunter.io/ios/app/magnetic-detector-stud-finder/id1403751803)

This app uses your device's magnetometer to detect magnetic and electromagnetic fields. It helps locate metal objects, hidden wires, pipes, and even wood studs behind walls. Get real-time readings and alerts to explore your surroundings.

**Highlights:** Detects magnetic and EMF fields, Locates metal objects, wires, and pipes, Finds hidden wood studs behind walls, Real-time magnetic field intensity readings (μT & mG), Active detection beep alerts, Automatic storage of time and measurements

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Full Access | $4.99 | per 7 days |
| Remove Ads - Magnetic Detector | $2.99 | one-time |
| Unlock all - Premium & Warning Beep | $4.99 | one-time |
| Lifetime Full Access | $12.99 | one-time |

**What reviewers like**

- ⭐ Accurate magnetic detection
- 👍 Easy to use and intuitive
- 🔍 Helpful for finding hidden metal objects
- 🔧 Useful for troubleshooting mechanical issues (e.g., magnetized watches)

**What reviewers complain about**

- 💰 Ads can be intrusive in free version
- 🔒 Concerns about privacy and data collection
- 🔋 Potential impact on device battery life

**Reported bugs**

- Readings sometimes inconsistent or stop at certain thresholds
- Compatibility issues with some devices

**Requested features**

- Add support for measuring electric fields
- Improve accuracy and sensitivity
- Provide more detailed readings and analysis


### Magnetic Sensor

[App page](https://appshunter.io/ios/app/magnetic-sensor/id6764468454)

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

**In-app purchases:** none


## Frequently asked questions

### Is Magnetic Detector, Stud Finder free?

Magnetic Detector, Stud Finder is free to download, with in-app purchases available.

### Is Magnetic Sensor free?

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

### Do Magnetic Detector, Stud Finder or Magnetic Sensor have ads?

Both Magnetic Detector, Stud Finder and Magnetic Sensor show ads.

### Which is updated more often, Magnetic Detector, Stud Finder or Magnetic Sensor?

Magnetic Detector, Stud Finder ships an update every 2 months, and Magnetic Sensor fortnightly. Most recently, Magnetic Detector, Stud Finder was updated on November 6, 2026 and Magnetic Sensor on October 31, 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.*