電磁波チェッカー
Utilities
$0.99 · Designed for iPad. Not verified for macOS.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, satoshi amasaki, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- satoshi amasaki
- Size
- 5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 tokyonasu
