# SevenDiffs vs Metal Detector Simulator Prank

The clearest difference is rating: SevenDiffs at 5.0 against Metal Detector Simulator Prank's 4.3. SevenDiffs also leads on ads (none vs shown) and monetization model (free vs ad-supported). Metal Detector Simulator Prank's advantage is update cadence (every 4 months vs every 42 months) and ratings volume (59 vs 2). On price, in-app purchases, device support 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.

SevenDiffs holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Metal Detector Simulator Prank has 59 ratings behind it against 2, so its average is the more settled of the two.

SevenDiffs ships an update every 42 months, Metal Detector Simulator Prank every 4 months. Both last shipped on October 21, 2026.

## The numbers

| Metric | SevenDiffs | Metal Detector Simulator Prank |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sevendiffs/id505837104/reviews)** | [4.3 (59 ratings)](https://appshunter.io/ios/app/metal-detector-simulator-prank/id1286378592/reviews) |
| Number of ratings | 2 | **59** |
| Positive reviews | — | 58.8% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 42 months | **Every 4 months** |
| Monetization | **Free** | Ad-supported |
| Size | 66 MB | 25 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NMS Narcisse Mavoha Solutions Sarl](https://appshunter.io/developer/963941606) | [Denis Batishchev](https://appshunter.io/developer/1179896396) |

## What reviewers say

### SevenDiffs

[App page](https://appshunter.io/ios/app/sevendiffs/id505837104)

Sharpen your observation skills with this engaging game that challenges you to spot subtle differences between two similar images. It's a fun way for both children and adults to enhance their visual perception and learn through play.

**Highlights:** Find differences between images, Improves observation skills, Suitable for children and adults, Learn through fun gameplay, Enhances visual perception

**Features:** macOS Compatibility

**In-app purchases:** none


### Metal Detector Simulator Prank

[App page](https://appshunter.io/ios/app/metal-detector-simulator-prank/id1286378592)

Transform your phone into a simulated metal detector for fun. Prank friends by pretending to find metal objects. Adjust signal strength with finger movements for interactive play.

**Highlights:** Simulated metal detection, Prank your friends, Adjustable signal strength, Interactive finger controls, Improvise and play games

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SevenDiffs free?

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

### Is Metal Detector Simulator Prank free?

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

### Which has better reviews, SevenDiffs or Metal Detector Simulator Prank?

SevenDiffs is rated higher. SevenDiffs averages 5.0 out of 5 from 2 ratings, while Metal Detector Simulator Prank averages 4.3 from 59 ratings.

### Do SevenDiffs or Metal Detector Simulator Prank have ads?

Metal Detector Simulator Prank shows ads; SevenDiffs does not.

### Which is updated more often, SevenDiffs or Metal Detector Simulator Prank?

SevenDiffs ships an update every 42 months, and Metal Detector Simulator Prank every 4 months. Most recently, SevenDiffs was updated on October 21, 2026 and Metal Detector Simulator Prank on October 21, 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.*