# EMF Detector vs OkoCrime

The clearest difference is update cadence: OkoCrime at every 4 days against EMF Detector's every 2 weeks. EMF Detector's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. EMF Detector sells 2 in-app purchases, starting at $4.99 per month and OkoCrime sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

EMF Detector ships an update every 2 weeks, OkoCrime every 4 days. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | EMF Detector | OkoCrime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (319 ratings)](https://appshunter.io/ios/app/emf-detector-radiation-reader/id6572300713/reviews)** | — |
| Number of ratings | **319** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 26 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [新雨 李](https://appshunter.io/developer/1559932632) | [Aksana Martysiuk](https://appshunter.io/developer/1890897965) |

## 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 |


### OkoCrime

[App page](https://appshunter.io/ios/app/okocrime/id6761688904)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly premium subscription | $12.99 | per month |
| Premium | $19.99 | per 3 months |
| Quarterly premium subscription | $19.99 | per 3 months |


## Frequently asked questions

### Is EMF Detector free?

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

### Is OkoCrime free?

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

### Do EMF Detector or OkoCrime have ads?

Neither EMF Detector nor OkoCrime shows ads.

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

EMF Detector ships an update every 2 weeks, and OkoCrime every 4 days. Most recently, EMF Detector was updated on October 18, 2026 and OkoCrime 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.*