Contact Metal Detector Support

I was surprised that this works, but then after thinking about it it makes sense. I'm guessing that it detects FERROUS metals (i.e. metals that are attracted to magnets) by comparing the change in the internal compass measurement with the accelerometers (not affected by magnetic fields). If the compass moves without a corresponding change in the accelerometers, then there is ferrous metal nearby. I tried it on several metal objects, being careful to hold the phone flat, and after turning the sensitivity up to 20, I could detect my metallic flashlight. Somebody else was able to detect a metal knife. Yes, the needle moves if you tilt the phone, but I've never thought the compass worked very well unless the phone is flat anyway.

I am shocked that it works. The best use I have found is detecting nails/screws in drywall in order to find studs. It works better than a stud finder. As for scanning the ground for something that is dropped, I had little luck. But, I mean you are using your phone to find something metallic; do you expect it to work as perfectly as a tool designed to locate metal? No. But it sure works better than nothing and has not directed me towards nonexistent metal

I dropped a wireless earbud in my backyard, so i placed the other one I had in the grass to give a sense of how far i need to be/ how much it reacts to it. i ended up looking up and finding the missing one immediately w/o the detector, but it actually worked for the one i was testing lol. The only downside is that you have to be pretty much on top of the grass for it to work, but for a free app it did its job.