# いわぽんReader vs EMF Detector (Scanner)

The clearest difference is in-app purchases: いわぽんReader at none against EMF Detector (Scanner)'s 2. いわぽんReader also leads on ads (none vs shown) and device support (3 vs 1). EMF Detector (Scanner)'s advantage is update cadence (weekly vs every 2 months). On price there is nothing between them.

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

いわぽんReader ships an update every 2 months, EMF Detector (Scanner) weekly. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | いわぽんReader | EMF Detector (Scanner) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/emf-detector-scanner/id6759452241/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 71 MB | 6 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [岩手日報社](https://appshunter.io/developer/1469001715) | [JongMin Lee](https://appshunter.io/developer/1796849061) |

## What reviewers say

### いわぽんReader

[App page](https://appshunter.io/ios/app/reader/id1525190052)

**Features:** Vision Pro support

**In-app purchases:** none


### EMF Detector (Scanner)

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

Visualize electromagnetic field activity using your device's magnetometer. Monitor real-time changes with clear graphs and history logs. Useful for checking electronics and exploring magnetic environments.

**Highlights:** Real-time EMF meter, Live waveform and graph views, FFT frequency analysis, Signal change detection, Measurement history, Export options (PDF, video), Interactive sound effects

**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 いわぽんReader free?

いわぽんReader 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 いわぽんReader or EMF Detector (Scanner) have ads?

EMF Detector (Scanner) shows ads; いわぽんReader does not.

### Which is updated more often, いわぽんReader or EMF Detector (Scanner)?

いわぽんReader ships an update every 2 months, and EMF Detector (Scanner) weekly. Most recently, いわぽんReader was updated on October 27, 2026 and EMF Detector (Scanner) on October 31, 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.*