# Metal Detector 3D Plus vs Spectroscope

The clearest difference is price: Metal Detector 3D Plus at $2.99 against Spectroscope's $14.99. Metal Detector 3D Plus also leads on iOS requirement (13.0 vs 15.0). Spectroscope's advantage is update cadence (every 5 days vs every 38 months). On ads, in-app purchases and device support there is nothing between them.

Metal Detector 3D Plus costs $2.99 and Spectroscope $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Metal Detector 3D Plus ships an update every 38 months, Spectroscope every 5 days. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Metal Detector 3D Plus | Spectroscope |
| --- | --- | --- |
| Price | **$2.99** | $14.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 5 days** |
| Size | 2 MB | 25 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Heng Jia Liang](https://appshunter.io/developer/1532000635) | [LEONARDO TAZZINI](https://appshunter.io/developer/1751785749) |

## What reviewers say

### Metal Detector 3D Plus

[App page](https://appshunter.io/ios/app/metal-detector-3d-plus/id1619596809)

**Features:** macOS Compatibility

**In-app purchases:** none


### Spectroscope

[App page](https://appshunter.io/ios/app/spectroscope/id6741684078)

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

**In-app purchases:** none


## Frequently asked questions

### Is Metal Detector 3D Plus free?

Metal Detector 3D Plus costs $2.99, with no in-app purchases.

### Is Spectroscope free?

Spectroscope costs $14.99, with no in-app purchases.

### Do Metal Detector 3D Plus or Spectroscope have ads?

Neither Metal Detector 3D Plus nor Spectroscope shows ads.

### Which is updated more often, Metal Detector 3D Plus or Spectroscope?

Metal Detector 3D Plus ships an update every 38 months, and Spectroscope every 5 days. Most recently, Metal Detector 3D Plus was updated on November 7, 2026 and Spectroscope on November 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.*