# Trumpet Level vs Metal Detector・EMF Reader

The clearest difference is in-app purchases: Trumpet Level at none against Metal Detector・EMF Reader's 1. Metal Detector・EMF Reader's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Metal Detector・EMF Reader sells 1 one-off in-app purchase. Trumpet Level asks for nothing beyond the download.

Trumpet Level ships an update every 2 weeks, Metal Detector・EMF Reader weekly. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Trumpet Level | Metal Detector・EMF Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/metal-detectoremf-reader/id6749162622/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 39 MB | 18 MB |
| Requires iOS | **15.8.3** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Yash Mandhyan](https://appshunter.io/developer/1856960217) |

## What reviewers say

### Trumpet Level

[App page](https://appshunter.io/ios/app/trumpet-level/id6748576931)

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

**In-app purchases:** none


### Metal Detector・EMF Reader

[App page](https://appshunter.io/ios/app/metal-detectoremf-reader/id6749162622)

Transform your iPhone into a versatile tool for detecting metal objects, locating wall studs, and measuring EMF levels. Utilize the device's built-in magnetometer for real-time insights into magnetic fields and signal strength, perfect for various DIY and utility tasks.

**Highlights:** Detect nearby metal objects, Find wall studs, screws, nails, pipes, Real-time magnetic field readings, Live EMF meter and graph visualization, Signal confidence indicator, Axis-based directional detection

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $2.99 | one-time |


## Frequently asked questions

### Is Trumpet Level free?

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

### Is Metal Detector・EMF Reader free?

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

### Do Trumpet Level or Metal Detector・EMF Reader have ads?

Trumpet Level shows ads; Metal Detector・EMF Reader does not.

### Which is updated more often, Trumpet Level or Metal Detector・EMF Reader?

Trumpet Level ships an update every 2 weeks, and Metal Detector・EMF Reader weekly. Most recently, Trumpet Level was updated on October 15, 2026 and Metal Detector・EMF Reader on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*