# Electromagnetic Detector PRO vs Lumi

The clearest difference is price: Lumi at Free against Electromagnetic Detector PRO's $4.99. Electromagnetic Detector PRO's advantage is in-app purchases (none vs 1) and update cadence (every 14 months vs every 54 months). On ads there is nothing between them.

Lumi is free to download; Electromagnetic Detector PRO costs $4.99 up front. Lumi sells 1 one-off in-app purchase. Electromagnetic Detector PRO asks for nothing beyond the download.

Electromagnetic Detector PRO ships an update every 14 months, Lumi every 54 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Electromagnetic Detector PRO | Lumi |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.3 (12 ratings)](https://appshunter.io/ios/app/electromagnetic-detector-pro/id1350384533/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 14 months** | Every 54 months |
| Monetization | Paid | — |
| Size | 55 MB | 2 MB |
| Requires iOS | **11.2** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Gregorio Martin Bello](https://appshunter.io/developer/567988393) | [Kazumasa Matsushita](https://appshunter.io/developer/1569771331) |

## What reviewers say

### Electromagnetic Detector PRO

[App page](https://appshunter.io/ios/app/electromagnetic-detector-pro/id1350384533)

Transform your device into an electromagnetic field detector to identify high-risk wireless zones and potential sources of radiation. Receive warnings for strong magnetic fields and record measurements with timestamps. Useful for detecting metallic objects behind walls or underground.

**Highlights:** Detect electromagnetic fields (EMF), Warning beep for high radiation, Measure magnetic force on three axes, Record readings with timestamps, Store up to 100 records, Send measures via email

**Features:** macOS Compatibility

**In-app purchases:** none


### Lumi

[App page](https://appshunter.io/ios/app/lumi-det/id1569771329)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support max 10 devices | $2.99 | one-time |


## Frequently asked questions

### Is Electromagnetic Detector PRO free?

Electromagnetic Detector PRO costs $4.99, with no in-app purchases.

### Is Lumi free?

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

### Do Electromagnetic Detector PRO or Lumi have ads?

Neither Electromagnetic Detector PRO nor Lumi shows ads.

### Which is updated more often, Electromagnetic Detector PRO or Lumi?

Electromagnetic Detector PRO ships an update every 14 months, and Lumi every 54 months. Most recently, Electromagnetic Detector PRO was updated on November 2, 2026 and Lumi on November 7, 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.*