EMF Detector reads your iPhone's built-in magnetometer and shows the live magnetic field strength in µT or mG. It calibrates a baseline for the room, shows how steady that baseline was, and lets you record sessions with spike marks, review them afterwards, compare two sessions, and export readings as CSV. The app is for entertainment; it is not a scientific or safety instrument.
The reading shows "Phone moved during calibration".
Hold the phone still for two seconds and tap Calibrate under the meter. Calibration measures the room; moving during it gives a baseline that does not match the room.
Sensor accuracy is low.
Move the phone slowly in a figure-8 for a few seconds, away from magnets, speakers and metal. The accuracy indicator updates by itself.
I bought Pro and it is not showing.
Open Settings in the app and tap Restore Purchases, signed in to the same Apple Account you bought it with.
The ad did not unlock the export.
The export unlocks only when the ad plays to the end. If no ad is available, the app tells you and offers a retry.
I want to report an ad.
Settings > Support > Report an ad in the app opens an email to us.
Email: support@ashaquavision.com
Please include the app version (shown at the bottom of Settings) and your iPhone model.
Privacy policy for the iOS app: EMF Detector for iOS — Privacy Policy
Terms: Apple's Standard End User License Agreement.