# Thorlabs OPM Mobile vs EMF Scan

The clearest difference is in-app purchases: Thorlabs OPM Mobile at none against EMF Scan's 1. Thorlabs OPM Mobile also leads on ads (none vs shown). EMF Scan's advantage is update cadence (weekly vs every 15 months) and iOS requirement (13.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. EMF Scan sells 1 one-off in-app purchase. Thorlabs OPM Mobile asks for nothing beyond the download.

Thorlabs OPM Mobile ships an update every 15 months, EMF Scan weekly. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Thorlabs OPM Mobile | EMF Scan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Weekly** |
| Size | 26 MB | 29 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thorlabs GmbH](https://appshunter.io/developer/662121683) | [Yasuhiro Kodama](https://appshunter.io/developer/1895805086) |

## What reviewers say

### Thorlabs OPM Mobile

[App page](https://appshunter.io/ios/app/thorlabs-opm-mobile/id6502349225)

**In-app purchases:** none


### EMF Scan

[App page](https://appshunter.io/ios/app/emf-scan/id6770155541)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を削除 | $0.99 | one-time |


## Frequently asked questions

### Is Thorlabs OPM Mobile free?

Thorlabs OPM Mobile is free to download, with no in-app purchases.

### Is EMF Scan free?

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

### Do Thorlabs OPM Mobile or EMF Scan have ads?

EMF Scan shows ads; Thorlabs OPM Mobile does not.

### Which is updated more often, Thorlabs OPM Mobile or EMF Scan?

Thorlabs OPM Mobile ships an update every 15 months, and EMF Scan weekly. Most recently, Thorlabs OPM Mobile was updated on October 7, 2026 and EMF Scan on October 14, 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.*