# Electromagnetic Detector PRO vs IO ∙ Converter & Calculator

The clearest difference is review sentiment: Electromagnetic Detector PRO at 57% against IO ∙ Converter & Calculator's 33%. Electromagnetic Detector PRO also leads on rating (4.3 vs 4.0) and ratings volume (12 vs 1). IO ∙ Converter & Calculator's advantage is price ($0.99 vs $4.99) and update cadence (every 5 months vs every 14 months). On ads, in-app purchases and monetization model there is nothing between them.

Electromagnetic Detector PRO costs $4.99 and IO ∙ Converter & Calculator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electromagnetic Detector PRO holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Electromagnetic Detector PRO has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 57% of Electromagnetic Detector PRO's written reviews are positive against 33% of IO ∙ Converter & Calculator's.

Electromagnetic Detector PRO ships an update every 14 months, IO ∙ Converter & Calculator every 5 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Electromagnetic Detector PRO | IO ∙ Converter & Calculator |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | **[4.3 (12 ratings)](https://appshunter.io/ios/app/electromagnetic-detector-pro/id1350384533/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/io-converter-and-calculator/id1668857713/reviews) |
| Number of ratings | **12** | 1 |
| Positive reviews | **57.1% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 months** |
| Monetization | Paid | Paid |
| Size | 55 MB | 1 MB |
| Requires iOS | **11.2** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Gregorio Martin Bello](https://appshunter.io/developer/567988393) | [Alex Codrington](https://appshunter.io/developer/358228521) |

## 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


### IO ∙ Converter & Calculator

[App page](https://appshunter.io/ios/app/io-converter-and-calculator/id1668857713)

This utility app offers a comprehensive solution for unit and currency conversions, featuring live currency updates and a built-in calculator. It supports a wide range of units across multiple categories and is available on various Apple platforms.

**Highlights:** 13 conversion categories, Over 120 units supported, Live currency exchange rates, Integrated calculator, Cross-platform availability (Apple devices)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Electromagnetic Detector PRO free?

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

### Is IO ∙ Converter & Calculator free?

IO ∙ Converter & Calculator costs $0.99, with no in-app purchases.

### Which has better reviews, Electromagnetic Detector PRO or IO ∙ Converter & Calculator?

Electromagnetic Detector PRO is rated higher. Electromagnetic Detector PRO averages 4.3 out of 5 from 12 ratings, while IO ∙ Converter & Calculator averages 4.0 from 1 ratings.

### Do Electromagnetic Detector PRO or IO ∙ Converter & Calculator have ads?

Neither Electromagnetic Detector PRO nor IO ∙ Converter & Calculator shows ads.

### Which is updated more often, Electromagnetic Detector PRO or IO ∙ Converter & Calculator?

Electromagnetic Detector PRO ships an update every 14 months, and IO ∙ Converter & Calculator every 5 months. Most recently, Electromagnetic Detector PRO was updated on November 2, 2026 and IO ∙ Converter & Calculator on November 3, 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.*