This web app is a companion to the EMF Explorer Badge by Darcy Neal .

To use it, connect your EMF Explorer Badge to your device using a 3.5 mm TRS → USB-C microphone input cable. Then start exploring!

EMF Explorer Badge

Note: This app requires microphone access. Your browser may prompt you to allow this. No audio is recorded or transmitted; the app only analyzes the frequency spectrum of the signal from your badge.