
Jonathan Reichwald
I'm exceedingly impressed by the quality of this free with purchase tool. I like how It allows me to see different coins and the resonance they should have, I can easily see the proper weight, the dimensions are listed and shown using a highlighted area you can place the coin on. the free mode is also really cool so allowing you to do your own custom tests.
4 people found this review helpful

Tony Newcomb
Installed to try it out. It let me test a SE for free. I had a thin cloth on my desk and simply dropped the coin from about 2.5 inches high and it passed 5/5 every time. I tried gently holding and striking with a pencil but only could get 3/5. Will be purchasing the tool in the near future. Very cool app.

Roberts Ridge
tested multiple coins. the 1ozt generic coins, none would ping but using another app, instantly pinged good. used brand new buffalo coins. none of them would ping. I will be returning this Pinger to Amazon and getting my money back. I paid $38 for $25 cent injection molded piece of plastic because of the app. the app is horrible. I believe the 25 reviews to be paid for, let's see if my review stays or they remove it.
6 people found this review helpful
SoundMoneyMetals
February 13, 2026
Hello, the Acoustic Models are physics calculations that require accurate measurements. You'll need a 0.01mm Caliper and 0.01g scale to get accurate results. Hope the return process went well. If you still wanted help trouble shooting the issue please send me an email to Support@StackerTools.com