# Metal Detector EMF - RaPo — Detect EMF Radiation Meter

> Smartphone-based metal and EMF detector using magnetic sensor. (iPhone/iPad app by 嘉宁 何.)

- Source: https://appshunter.io/ios/app/metal-detector-emf-rapo/id6759005616 (this page in markdown: same URL + `.md`)
- Developer: [嘉宁 何](https://appshunter.io/developer/1769954544)
- Category: Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 3 MB
- Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-02-27
- Data updated: 2026-09-08
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/metal-detector-emf-rapo/id6759005616/reviews.md

## What is Metal Detector EMF?

RaPo is a lightweight and practical tool for metal detection and electromagnetic field (EMF) intensity testing. 

It uses the built-in magnetic sensor of your smartphone to read magnetic field data in real time, helping you quickly detect surrounding metal objects and changes in the electromagnetic environment.

You can use it for:
1. Detecting metal objects hidden underground, behind walls, and in other places
2. Assisting in the detection of internal items in blind boxes that contain metal, magnets, and other components
3. Real-time viewing of magnetic field values and waveform changes to intuitively understand intensity trends
4. Serving as a daily fun detection tool to experience the joy of treasure hunting and electromagnetic detection

Value Explanation
The higher the detected value, the closer you are to metal or strong electromagnetic items. Click to start detection, place your phone close to the area you want to detect, and start your experience!

Kind Reminder
- For blind box detection, it only has an auxiliary effect on scenes where the blind box contains metal, magnets and other components, and the distance between the phone and the blind box is sufficiently close.
- This app is for reference only and cannot be used as a professional measurement tool.
- Some non-ferrous metals (such as gold, silver, copper coins, etc.) are non-magnetic and cannot be detected.
- This app relies on the phone's magnetic sensor; it will not work properly on devices without this hardware.

User Agreement: https://xi7kkup9f4k.feishu.cn/docx/RxXfdcZgBoSTeUxYd99cHdBTncf?from=from_copylink
Privacy Policy: https://xi7kkup9f4k.feishu.cn/docx/RxXfdcZgBoSTeUxYd99cHdBTncf?from=from_copylink

## Key features

- Metal object detection
- EMF intensity testing
- Real-time magnetic field readings
- Waveform visualization
- Treasure hunting simulation

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Pro | $1.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/metal-detector-emf-rapo/id6759005616/reviews.md

### 1/5 — 不准

*2026-03-26*

远离金属数值变大，靠近金属数值反耳呢变小了去来，这上哪说去

## Frequently asked questions about Metal Detector EMF

### What can Metal Detector EMF - RaPo detect?

Metal Detector EMF - RaPo can detect magnetic metal objects hidden underground or behind walls. It can also assist in identifying metal or magnetic components within blind boxes when the phone is close.

### How does Metal Detector EMF - RaPo work?

The app utilizes your smartphone's built-in magnetic sensor to read magnetic field data in real time. Higher detected values indicate proximity to metal or strong electromagnetic items.

### Can Metal Detector EMF - RaPo detect all types of metal?

No, this app cannot detect non-ferrous metals like gold, silver, or copper coins, as they are non-magnetic. It is primarily effective for magnetic metals.

### Is Metal Detector EMF - RaPo accurate for professional use?

This app is intended for reference and entertainment purposes only. It cannot be used as a professional measurement tool for precise scientific or industrial applications.

### Does Metal Detector EMF - RaPo require specific phone hardware?

Yes, Metal Detector EMF - RaPo relies on the phone's magnetic sensor. It will not function correctly on devices that lack this hardware component.

### What is the update frequency for Metal Detector EMF - RaPo?

The app was last updated on March 10, 2026, with version 1.1. Future updates will depend on developer activity and user feedback.

### What is the age rating for Metal Detector EMF - RaPo?

Metal Detector EMF - RaPo has an age rating of 4+, making it suitable for a wide range of users.

### Does Metal Detector EMF - RaPo have ads?

No, Metal Detector EMF - RaPo does not contain advertisements.

## Version history (last 2 releases)

### 1.1 — 2026-03-10

fixed some bugs

### 1.0 — 2026-02-27

No release notes.

## More apps by 嘉宁 何

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- [Noise Meter - NoisePo](https://appshunter.io/ios/app/noise-meter-noisepo/id6740921533)
- [LivePo - Video Into Live](https://appshunter.io/ios/app/livepo-video-into-live/id6741813954)
- [Just Cam - Raw Portrait & Film](https://appshunter.io/ios/app/just-cam-raw-portrait-and-film/id6744271236)
- [SwipePo - Swipe to Clean Photo](https://appshunter.io/ios/app/swipepo-swipe-to-clean-photo/id6752572744)

All apps by 嘉宁 何: https://appshunter.io/developer/1769954544

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*