Professional-grade counterfeit detection in your pocket. Protect your investment with acoustic authentication technology.
Chinese fakes use 3D scanners and CNC mills to create near-perfect replicas flooding the market.
XRF scanners and ultrasound equipment cost thousands of dollars.
One fake gold coin could cost you $2,000+
How do you verify coins from new dealers or private sellers?
Like musical instruments, coins produce unique resonance frequencies based on their material and composition. Pingcoin captures and analyzes your coin's acoustic signature, comparing it against verified reference values in milliseconds.
Choose from 23 silver coins or 14 gold coins. Popular options: Eagles, Maple Leafs, Buffalos, Philharmonics, Krugerrands.
Gently tap your coin and let the app capture the sound. Advanced algorithms analyze three key frequencies.
Get immediate results: "Authentic" or "Not Recognized". Know in seconds, not days.
Vibrational analysis is trusted worldwide across critical industries for structural integrity monitoring and material verification
FEM simulation showing vibrational modes of a coin
We've run Finite Element Method (FEM) analyses to understand and predict how coins vibrate and produce sound. This computational modeling allows us to precisely map the acoustic signatures that distinguish authentic coins from counterfeits.
Vibrational analysis is a well-established, industry-proven method for assessing the integrity of structures and materials. This non-destructive testing technique is trusted across critical applications worldwide.
Engineers use vibration testing to detect structural defects in bridges without causing damage. Modal analysis helps identify weaknesses before they become critical failures.
Aircraft components undergo rigorous vibration testing to ensure structural integrity. NASA and aerospace manufacturers rely on modal analysis to verify component authenticity and detect manufacturing defects.
Predictive maintenance programs monitor vibrations in rotating machinery to detect bearing wear, imbalance, and other issues before equipment failure occurs.
Structural health monitoring systems use vibration sensors to continuously assess building integrity, especially critical for earthquake-prone regions and high-rise structures.
Industrial vibration testing solution for structural integrity monitoring across aerospace, automotive, civil engineering, and power generation sectors. Accelerometers and force sensors measure dynamic responses of critical components like turbines and engine assemblies to detect structural weaknesses and optimize performance.
Professional authentication for the most popular silver and gold bullion coins
Real reviews from precious metals collectors and investors on Google Play
"Wow im really impressed with this app, im new to silver coin / round collecting so i am still a little unsure of some of the coins i have bought, used this app and they all came back as genuine. I also had one known fake coin which i tested and it came back as fake."
"Simple app, does what it needs to do."
"Very good for testing silver and gold coins"
"I was surprised how easy and quick it identified coins"
"Works very well and accurate on Samsung A20"
"It works it's basic, it won't ping random blank silver bouillon. But most minted gold and silver coins are on this app it's good."
"What an amazing app!"
"Great app, much needed."
"I downloaded your app last month. I buy mostly from big sellers so don't get a lot of sus coins. But I like the way it works and it's another nice way to confirm that my silver/gold is legit. Thanks!"
See what coin collectors and precious metals experts are saying about Pingcoin
Verify your stack before sealing the safe
Authenticate additions to your collection
Quick first-line screening for inventory
Rapid assessment of inherited collections
Verify that wedding or graduation coin is genuine
Test before you buy from individual sellers
Less than the cost of a single counterfeit coin
The ping test is a time-honored method where you tap a coin and listen to its ring. Genuine precious metals produce a distinctive, sustained tone, while counterfeits sound dull. Pingcoin digitizes this test with precision audio analysis.
Pingcoin compares your coin's resonance frequencies against verified reference values. While highly effective, some coins with similar composition may have overlapping frequencies. We recommend using the ping test alongside other verification methods (weight, dimensions, visual inspection). Learn more about best practices in our documentation.
Currently 23 silver coins and 14 gold coins, including popular options like American Eagles, Canadian Maple Leafs, Austrian Philharmonics, Gold Buffalos, Krugerrands, and more. View detailed specifications and authentication guides for each coin.
The app is optimized for coins. Bars have different acoustic properties and may not provide reliable results.
Yes. Pingcoin works completely offline. No audio recordings or coin data leave your device.
Android devices via Google Play Store. iOS version coming soon.
Join thousands of collectors who trust Pingcoin to safeguard their precious metals collection.
Don't let counterfeiters win. Download Pingcoin and verify with confidence.
Coins Supported
Years Trusted
User Reviews