Been using Bullion Test for a couple months now. It’s basically an app that helps you detect fake bullion coins by analyzing their resonance frequencies. Pretty solid if you’re into precious metals and stuff like that.
Here’s what you do: you just hold your coin up to the phone’s mic and the app will tell you if it’s real silver or not. There’s also a YouTube tutorial video which is super helpful. And the app can actually detect frequencies above human hearing range – pretty cool.
Look, if you collect coins or invest in bullion, you’ll probably like this. It’s not perfect – sometimes it has trouble with certain coins – but overall it does the job. Worth checking out.
