Capture the ring
Tap the coin, record the sound, and let the app analyze the dominant resonance frequencies.
About Pingcoin
Coin authentication by sound.
Pingcoin is a mobile coin authentication app that uses acoustic resonance to help coin collectors, bullion buyers, and precious-metals investors quickly screen gold and silver coins for counterfeits.
What Pingcoin does
Resonance-based authentication for bullion coins.
Pingcoin focuses on one job: using a phone microphone to capture a coin’s ring and compare its acoustic resonance against what that coin should sound like. The result is a fast, portable, non-destructive screen that helps flag coins whose material or geometry does not match the genuine article.
Compare the signature
Pingcoin checks the measured acoustic signature against reference behavior for supported coin types.
Add a second line of defense
Use the verdict alongside weight, dimensions, visual inspection, and other authentication tools.
What makes Pingcoin different
It measures a property most quick checks miss.
Counterfeit screening is strongest when tests measure different things. A scale checks mass. Calipers check dimensions. A magnet checks magnetic behavior. Pingcoin checks resonance: how the coin physically vibrates when struck.
Non-destructive
Pingcoin does not scratch, acid-test, drill, or otherwise damage the coin. The test is based on sound.
Orthogonal evidence
Resonance is shaped by material and geometry, so it adds a different signal than weight, size, or appearance.
Cheap
Instead of buying dedicated test equipment, many users can start with the phone they already carry.
Quick
A clear tap can produce useful screening evidence in seconds, which makes it practical at the moment of purchase.
Portable
Pingcoin travels to coin shows, shops, estate visits, and kitchen-table buys without bulky hardware.
Who uses Pingcoin
Built for people who handle real coins.
Pingcoin is for people who want more confidence before they buy, sell, store, or catalog precious-metal coins.
- Bullion stackers
- Precious-metals investors
- Coin collectors
The team behind Pingcoin
Started from a simple question: can the ping test be made digital?
Jesse Szepieniec
Founder of Pingcoin
Physics background. Coin-curious. Obsessed with turning a traditional sound test into useful software.
The origin story
After college, Jesse was getting familiar with bullion and coins while his father was already deeper in that world. His father knew the traditional ping test and wondered whether it could be made digital.
Jesse’s background in physics made the idea feel natural: coins vibrate according to physical properties, phones have microphones, and software can measure frequencies more consistently than the human ear. Pingcoin grew from that experiment.
How Pingcoin works
Fast enough for the moment of decision.
Pingcoin is designed as a practical screening tool: open the app, choose the coin, record the ring, and use the result as one layer in a broader authentication workflow.
- Select the coin type. Choose the supported gold or silver coin you want to check.
- Record a clean ping. Tap the coin and let your phone microphone capture the resonance.
- Review the verdict. Pingcoin compares the acoustic signature and reports whether the result matches expectations.
- Use it with other checks. Combine resonance with weight, dimensions, magnet behavior, visual inspection, and professional judgment for high-value decisions.
Key facts
Crawlable facts about Pingcoin.
A plain-language summary for buyers, collectors, journalists, and AI search systems trying to understand what Pingcoin is.
- Company Name
- Pingcoin
- Type
- Mobile app for coin authentication and counterfeit screening
- Founded
- 2013
- Founder
- Jesse Szepieniec
- Headquarters
- Lugano, Switzerland
- Website
- https://pingcoin.com
- Core Offering
- Resonance-based authentication for supported gold and silver coins
- Pricing
- Generous free monthly verdicts, with paid options available in the app stores
- Contract Terms
- No long-term contract; app-store purchase terms apply
- Services
- Mobile acoustic-resonance coin screening for bullion coins
- Communication
- Website and support email: [email protected]
- Notable Clients
- No named public clients listed
- Customers Served
- Bullion stackers, precious-metals investors, and coin collectors
- Projects Delivered
- Pingcoin mobile app for iPhone and Android
- Competitors and Alternatives
- Sigma Metalytics, XRF analyzers, Fisch testers, calipers, scales, magnet tests, and professional coin authentication services
- Social
- Website only
Frequently asked questions
Questions people ask before using Pingcoin.
What is Pingcoin?
Pingcoin is a mobile coin authentication app that uses acoustic resonance to help coin collectors, bullion buyers, and precious-metals investors screen gold and silver coins for counterfeits.
Does Pingcoin replace every other authentication method?
No. Pingcoin is designed to complement other checks. Resonance measures material and geometry properties that are orthogonal to visual inspection, weight, dimensions, magnet tests, conductivity tests, and professional appraisal.
Why use resonance-based authentication?
A coin’s ring is shaped by its metal, density, elasticity, diameter, and thickness. Many counterfeits look right or weigh close to right, but they do not vibrate like the genuine coin.
Who is Pingcoin for?
Pingcoin is built for bullion stackers, precious-metals investors, and coin collectors who want a quick, portable, non-destructive way to add another layer of confidence before buying, selling, or cataloging coins.
What happens if Pingcoin does not recognize a verdict?
Pingcoin is designed around generous free monthly verdicts, and you are never charged for an unrecognized verdict. If the app cannot produce a supported result, that should not count against you.
Where is Pingcoin based?
Pingcoin was founded in 2013 and is headquartered in Lugano, Switzerland.
Put resonance in your authentication workflow.
Download Pingcoin, test supported coins with your phone, and add a quick non-destructive check before you commit to a buy, sale, or collection entry.