# 電磁波チェッカー

> 電磁波チェッカー (iPhone/iPad app by satoshi amasaki.)

- Source: https://appshunter.io/ios/app/id6792382494 (this page in markdown: same URL + `.md`)
- Developer: [satoshi amasaki](https://appshunter.io/developer/1891268722)
- Category: Utilities, Education
- Price: $0.99
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: Japanese
- Released: 2026-07-29
- Data updated: 2026-08-28
- User reviews in markdown: https://appshunter.io/ios/app/id6792382494/reviews.md

## What is 電磁波チェッカー?

Measure the magnetic field around you with your phone's magnetometer.

Every iPhone has a magnetometer for its compass. EMF Checker reads the three-axis magnetic field and shows its strength in microtesla (µT). It picks up the low-frequency magnetic fields made by microwaves, transformers, wiring, speakers, motors, and magnets.

Features
- Analog-meter face with a glowing LCD readout
- Calibrate to set your current spot as the baseline
- Delta from baseline and a 5-level color danger scale
- Click and haptic feedback on magnetic spikes
- Raw X / Y / Z axis values

How to use
Tap Start, then Calibrate to set the baseline, then move the phone toward whatever you want to check.

Important
This is a magnetic-field meter, not an RF/EMF meter. It cannot measure WiFi, 5G, or microwave RF. Sensitivity and accuracy vary by device, and readings must not be used for medical, safety, or emergency decisions. It is for reference, experiments, and fun. No data is collected or transmitted.


## Version history (last 1 release)

### 1.0 — 2026-07-29

No release notes.

## More apps by satoshi amasaki

- [CompactCam](https://appshunter.io/ios/app/compactcam/id6761750166)
- [ノミワスレーヌ](https://appshunter.io/ios/app/id6761757464)
- [Real Soroban](https://appshunter.io/ios/app/real-soroban/id6761827077)
- [ズツウォッチ](https://appshunter.io/ios/app/id6761879273)
- [FourScan - Spy Detector](https://appshunter.io/ios/app/fourscan-spy-detector/id6761895107)
- [Enochian Keys](https://appshunter.io/ios/app/enochian-keys/id6762251166)

All apps by satoshi amasaki: https://appshunter.io/developer/1891268722

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*