# i Metal Detector vs Visão Subnormal

The clearest difference is ads: Visão Subnormal at none against i Metal Detector's shown. Visão Subnormal also leads on update cadence (every 9 days vs every 2 months). i Metal Detector's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and in-app purchases there is nothing between them.

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

i Metal Detector ships an update every 2 months, Visão Subnormal every 9 days. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | i Metal Detector | Visão Subnormal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (26 ratings)](https://appshunter.io/ios/app/i-metal-detector/id1032659582/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 29.6% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 0 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [Joao Dias](https://appshunter.io/developer/1875140231) |

## What reviewers say

### i Metal Detector

[App page](https://appshunter.io/ios/app/i-metal-detector/id1032659582)

This utility app transforms your iPhone into a metal detector using its magnetic field sensor. It detects nearby metal objects by measuring variations in the magnetic field. Be cautious not to hold your device too close to strong magnets to prevent potential damage.

**Highlights:** Uses iPhone's magnetic field sensor, Detects nearby metal objects, Measures magnetic field variations, Simple and intuitive interface

**Features:** Vision Pro support

**In-app purchases:** none


### Visão Subnormal

[App page](https://appshunter.io/ios/app/visao-subnormal/id6770180969)

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

**In-app purchases:** none


## Frequently asked questions

### Is i Metal Detector free?

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

### Is Visão Subnormal free?

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

### Do i Metal Detector or Visão Subnormal have ads?

i Metal Detector shows ads; Visão Subnormal does not.

### Which is updated more often, i Metal Detector or Visão Subnormal?

i Metal Detector ships an update every 2 months, and Visão Subnormal every 9 days. Most recently, i Metal Detector was updated on October 24, 2026 and Visão Subnormal on October 8, 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.*