# Magnetometer ∞ vs Metal Detector

The clearest difference is ads: Metal Detector at none against Magnetometer ∞'s shown. Metal Detector also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Magnetometer ∞ sells 2 in-app purchases, starting at $1.99 per 7 days and Metal Detector sells 2 in-app purchases, starting at $1.59 per 7 days. Whichever you choose, the download price is not the number that matters.

Magnetometer ∞ ships an update fortnightly, Metal Detector every 2 weeks. Both last shipped on November 13, 2026.

## The numbers

| Metric | Magnetometer ∞ | Metal Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (59 ratings)](https://appshunter.io/ios/app/magnetometer/id6753061844/reviews)** | — |
| Number of ratings | **59** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 1 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fawkes Wei](https://appshunter.io/developer/432767536) | [杰 向](https://appshunter.io/developer/1860305678) |

## What reviewers say

### Magnetometer ∞

[App page](https://appshunter.io/ios/app/magnetometer/id6753061844)

Visualize magnetic fields in real-time with precision charts and monitor axis readings. Ideal for scientific research, education, and field work, offering professional-grade accuracy and an intuitive interface for data interpretation.

**Highlights:** Real-time magnetic field visualization, Precision charts, X, Y, Z axis readings in µT, Scientific research tool, Educational use, Field work measurements, Intuitive interface

**Features:** iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Lifetime | $9.99 | one-time |


### Metal Detector

[App page](https://appshunter.io/ios/app/metal-detector-ironscope/id6762010256)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IronScope Pro Weekly | $1.59 | per 7 days |
| IronScope Pro Yearly | $19.90 | per year |


## Frequently asked questions

### Is Magnetometer ∞ free?

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

### Is Metal Detector free?

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

### Do Magnetometer ∞ or Metal Detector have ads?

Magnetometer ∞ shows ads; Metal Detector does not.

### Which is updated more often, Magnetometer ∞ or Metal Detector?

Magnetometer ∞ ships an update fortnightly, and Metal Detector every 2 weeks. Most recently, Magnetometer ∞ was updated on November 13, 2026 and Metal Detector on November 13, 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.*