# music key vs Real EMF Detector

The clearest difference is in-app purchases: music key at none against Real EMF Detector's 4. music key also leads on iOS requirement (11.0 vs 17.0). Real EMF Detector's advantage is device support. On price there is nothing between them.

Both are free to download. Real EMF Detector sells 4 in-app purchases, starting at $1.99 per 7 days. music key asks for nothing beyond the download.

## The numbers

| Metric | music key | Real EMF Detector |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Fortnightly |
| Size | 25 MB | 17 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | +4 |
| Developer | [iformor](https://appshunter.io/developer/1457531489) | [MOBILE ALCHEMY LTD](https://appshunter.io/developer/1577973502) |

## What reviewers say

### music key

[App page](https://appshunter.io/ios/app/music-key/id1457531490)

**In-app purchases:** none


### Real EMF Detector

[App page](https://appshunter.io/ios/app/real-emf-detector/id6772847396)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EMF Detector Pro | $1.99 | per 7 days |
| EMF Detector Pro | $4.99 | per month |
| EMF Detector Pro | $19.99 | per year |
| EMF Detector Pro – Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is music key free?

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

### Is Real EMF Detector free?

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

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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.*