# EMF Detector vs ECSig

The clearest difference is rating: ECSig at 5.0 against EMF Detector's 4.3. ECSig also leads on in-app purchases (none vs 3). EMF Detector's advantage is ratings volume (319 vs 2) and update cadence (every 2 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. EMF Detector sells 2 in-app purchases, starting at $4.99 per month. ECSig asks for nothing beyond the download.

ECSig holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: EMF Detector has 319 ratings behind it against 2, so its average is the more settled of the two.

EMF Detector ships an update every 2 weeks, ECSig every 3 months. The most recent releases landed on October 13, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | EMF Detector | ECSig |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (319 ratings)](https://appshunter.io/ios/app/emf-detector-radiation-reader/id6572300713/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ecsig/id6737245267/reviews)** |
| Number of ratings | **319** | 2 |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 11 MB | 29 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [新雨 李](https://appshunter.io/developer/1559932632) | [Ecsite Inc](https://appshunter.io/developer/1529398875) |

## What reviewers say

### EMF Detector

[App page](https://appshunter.io/ios/app/emf-detector-radiation-reader/id6572300713)

Transform your iPhone into an EMF detector to monitor electromagnetic fields. Identify radiation levels in various environments to assess safety at home, work, or in public spaces. Gain insights to make informed decisions about your surroundings.

**Highlights:** EMF monitoring, Electromagnetic field detection, Radiation level measurement, Environmental safety assessment, Real-time EMF readings

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| unlimited features | $4.99 | per month |
| unlimited features | $14.99 | one-time |


### ECSig

[App page](https://appshunter.io/ios/app/ecsig/id6737245267)

This app provides a user-friendly interface to control RF signal generator devices. It allows precise customization of signal frequency and power output across multiple channels via a Bluetooth connection.

**Highlights:** Bluetooth device connection, Control 4-8 individual channels, Customize frequency and power, Save and recall device profiles, Intuitive professional interface

**In-app purchases:** none


## Frequently asked questions

### Is EMF Detector free?

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

### Is ECSig free?

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

### Which has better reviews, EMF Detector or ECSig?

ECSig is rated higher. EMF Detector averages 4.3 out of 5 from 319 ratings, while ECSig averages 5.0 from 2 ratings.

### Do EMF Detector or ECSig have ads?

Neither EMF Detector nor ECSig shows ads.

### Which is updated more often, EMF Detector or ECSig?

EMF Detector ships an update every 2 weeks, and ECSig every 3 months. Most recently, EMF Detector was updated on October 13, 2026 and ECSig on September 23, 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.*