# Magnetometer+ vs NSD Detector

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

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

Magnetometer+ ships an update every 4 days, NSD Detector every 2 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Magnetometer+ | NSD Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (7 ratings)](https://appshunter.io/ios/app/magnetometer-plus/id6760181481/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 62 MB | 34 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) | [NEURO SCAN DETECTOR LTD](https://appshunter.io/developer/1895586615) |

## What reviewers say

### Magnetometer+

[App page](https://appshunter.io/ios/app/magnetometer-plus/id6760181481)

Transform your device into a magnetic field detector. It measures magnetic field strength in real-time with a 3-axis display and provides visual alerts for metal and magnet detection. Explore the invisible magnetic world around you with a sleek, intuitive interface.

**Highlights:** Real-time magnetic field measurement, 3-axis directional analysis, Metal and magnet detection alerts, Radar-style magnetic scanner, N/S/E/W compass markings, Adjustable sensitivity

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

**In-app purchases:** none


### NSD Detector

[App page](https://appshunter.io/ios/app/nsd-detector/id6763984979)

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

**In-app purchases:** none


## Frequently asked questions

### Is Magnetometer+ free?

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

### Is NSD Detector free?

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

### Do Magnetometer+ or NSD Detector have ads?

Magnetometer+ shows ads; NSD Detector does not.

### Which is updated more often, Magnetometer+ or NSD Detector?

Magnetometer+ ships an update every 4 days, and NSD Detector every 2 months. Most recently, Magnetometer+ was updated on September 24, 2026 and NSD Detector on September 25, 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.*