# Metal Detector vs Authenticator

The clearest difference is update cadence: Authenticator at every 6 days against Metal Detector's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Metal Detector sells 3 in-app purchases, starting at $2.99 per 7 days and Authenticator sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Metal Detector ships an update every 2 months, Authenticator every 6 days. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Metal Detector | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (15 ratings)](https://appshunter.io/ios/app/metal-detector-emf/id6755724522/reviews)** | — |
| Number of ratings | **15** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 40 MB |
| Requires iOS | 16 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [良程 孙](https://appshunter.io/developer/1882425817) | [NODEBIN COMPANY LIMITED](https://appshunter.io/developer/1703431173) |

## What reviewers say

### Metal Detector

[App page](https://appshunter.io/ios/app/metal-detector-emf/id6755724522)

Transform your iPhone into a versatile detection tool. Easily locate studs, metal objects, and even lost Bluetooth devices. Log your finds and navigate with an integrated compass for efficient searching.

**Highlights:** Adjustable metal detection sensitivity, Log detection data with location, Integrated digital compass, Scan for and locate Bluetooth devices, Find jewelry, keys, and tools

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Metal Detector EMF Pro | $2.99 | per 7 days |
| Metal Detector EMF Pro | $5.99 | per month |
| Metal Detector EMF Pro | $7.99 | one-time |


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-2fa-and-mfa/id6805722893)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $4.99 | per 7 days |
| Premium Monthly | $5.99 | per month |
| Premium Annual | $59.99 | per year |


## Frequently asked questions

### Is Metal Detector free?

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

### Is Authenticator free?

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

### Do Metal Detector or Authenticator have ads?

Neither Metal Detector nor Authenticator shows ads.

### Which is updated more often, Metal Detector or Authenticator?

Metal Detector ships an update every 2 months, and Authenticator every 6 days. Most recently, Metal Detector was updated on October 24, 2026 and Authenticator 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.*