# A vs EMF Detector (Scanner)

The clearest difference is in-app purchases: A at none against EMF Detector (Scanner)'s 2. A also leads on ads (none vs shown) and iOS requirement (14.0 vs 17.6). On price, update cadence and device support there is nothing between them.

Both are free to download. EMF Detector (Scanner) sells 2 one-off in-app purchases. A asks for nothing beyond the download.

A ships an update every 8 days, EMF Detector (Scanner) weekly. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | A | EMF Detector (Scanner) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 days | **Weekly** |
| Size | 37 MB | 6 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [ACMETEC HOLDINGS LTD](https://appshunter.io/developer/965048939) | [JongMin Lee](https://appshunter.io/developer/1796849061) |

## What reviewers say

### A

[App page](https://appshunter.io/ios/app/a-nfc/id6745577712)

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

**In-app purchases:** none


### EMF Detector (Scanner)

[App page](https://appshunter.io/ios/app/emf-detector-scanner/id6759452241)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Premium Pass | $0.99 | one-time |
| 1 Year Premium Pass | $2.99 | one-time |


## Frequently asked questions

### Is A free?

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

### Is EMF Detector (Scanner) free?

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

### Do A or EMF Detector (Scanner) have ads?

EMF Detector (Scanner) shows ads; A does not.

### Which is updated more often, A or EMF Detector (Scanner)?

A ships an update every 8 days, and EMF Detector (Scanner) weekly. Most recently, A was updated on October 17, 2026 and EMF Detector (Scanner) on October 9, 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.*