# EMF Detector vs NSguard

The clearest difference is in-app purchases: NSguard at none against EMF Detector's 3. NSguard also leads on ads (none vs shown). EMF Detector's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price and update cadence there is nothing between them.

Both are free to download. EMF Detector sells 3 in-app purchases, starting at $2.99 per month. NSguard asks for nothing beyond the download.

EMF Detector ships an update every 10 days, NSguard weekly. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | EMF Detector | NSguard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Weekly** |
| Size | 56 MB | 3 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Singabe Djonouma](https://appshunter.io/developer/1875109741) | [增阳 赵](https://appshunter.io/developer/1895564529) |

## What reviewers say

### EMF Detector

[App page](https://appshunter.io/ios/app/emf-detector-magnetic-waves/id6758810056)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $19.99 | per year |
| Lifetime Premium | $39.99 | one-time |


### NSguard

[App page](https://appshunter.io/ios/app/nsguard/id6779931459)

**In-app purchases:** none


## Frequently asked questions

### Is EMF Detector free?

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

### Is NSguard free?

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

### Do EMF Detector or NSguard have ads?

EMF Detector shows ads; NSguard does not.

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

EMF Detector ships an update every 10 days, and NSguard weekly. Most recently, EMF Detector was updated on November 9, 2026 and NSguard on November 5, 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.*