Stop Buying Counterfeits.
Start Testing Every Coin.
Instant acoustic authentication for gold and silver coins. Catch fakes that fool scales and visual inspection—at 50x less than Sigma.
The Dealer's Dilemma
Every coin you buy is a risk. Every second spent testing is profit lost.
Weight Tests Miss Tungsten
Tungsten's density (19.25 g/cm³) is within 0.4% of gold (19.32 g/cm³). Scales can't tell the difference. You need acoustic testing.
Equipment Costs Are Brutal
Sigma: $1,500. XRF: $30,000+. For a small dealer or coin shop, the math doesn't work—until one fake wipes out months of profit.
Every Minute Counts
At coin shows and estate sales, you're competing for inventory. Lengthy testing procedures cost you deals.
Reputation is Everything
Sell one fake—even unknowingly—and your reputation takes a hit. Worse: you might face legal liability.
How Pingcoin Compares
Professional authentication without the professional price tag
| Feature | Pingcoin | Sigma Metalytics | XRF Scanner |
|---|---|---|---|
| Price | $28.99/year on Android | $1,500+ | $30,000+ |
| Detects tungsten fakes | ✓ | ✓ | ✗ (surface only) |
| Portable | ✓ Phone app | ✓ 2.5 lbs | ✗ Stationary |
| Works offline | ✓ | ✓ | ✓ |
| Supported coins | 64 coins | Many metals | Elemental analysis |
| Test time | ~5 seconds | ~5 seconds | ~30 seconds |
| Learning curve | Minimal | Moderate | Significant |
| Battery/Power | Uses phone battery | Rechargeable | AC power |
Built for How Dealers Work
From the shop counter to the coin show floor
At the Counter
Customer walks in with coins to sell. Quick ping test on your phone while discussing the transaction. Pass or flag in seconds.
At Coin Shows
Competition is fierce. Test coins at other dealers' tables without bulky equipment. Your phone is always with you.
Estate Purchases
Buying a collection at someone's home? Verify high-value pieces on site before committing. No need to transport equipment.
Online Inventory
Verifying coins bought through online channels or mail-in purchases? Test everything that arrives before adding to stock.
Customer Confidence
Test coins in front of buyers. Transparency builds trust and differentiates you from dealers who "just eyeball it."
Staff Training
Teach employees to recognize fakes. Pingcoin provides instant feedback—more effective than lectures.
The Math Is Simple
One fake gold coin caught pays for 70 years of Pingcoin
The cost of one fake 1 oz Gold Eagle vs. one year of Pingcoin unlimited
If you handle even a handful of gold coins a month, one avoided fake pays for many years of the app. The annual plan ($28.99 on Android, $34.99 on iPhone) covers unlimited tests for one person, including in a shop. Each member of staff who tests coins needs their own subscription.
Dealer FAQ
Common questions from coin professionals
How accurate is Pingcoin compared to Sigma?
Both test different properties (acoustic vs. conductivity) and catch different types of fakes. Many dealers use both. Pingcoin excels at catching tungsten fakes because tungsten's acoustic properties differ dramatically from gold's.
Can I use it at noisy coin shows?
Usually, but noise can get in the way. Loud talking or clatter near the phone can stop the app from picking out the ring, and you'll get no clear match rather than a pass. Test in a quiet moment or a corner of your booth, with the phone close to the coin.
What coins are supported?
64 coins including American Eagles (gold/silver), Canadian Maple Leafs, Krugerrands, Philharmonics, Britannias, Chinese Pandas, Morgan Dollars, and more. We add new coins regularly.
Do you offer volume pricing for shops?
Each person who tests coins needs their own subscription. For several staff, contact us at [email protected] about multi-user arrangements. We work with coin shops, pawn shops, and dealer networks.
Does it work on older Android phones?
Pingcoin works on most Android devices running Android 5.0+. No special microphone required—standard phone hardware is sufficient. Audio quality varies by device, but we calibrate for typical phone mics.
What about iOS?
Pingcoin is available now for iPhone and Android, so your team can verify coins from the device already in their pocket.
Protect Your Business Starting Today
Download Pingcoin free. Test 10 coins per month at no cost. Upgrade through the App Store or Google Play when you're ready; platform pricing differs.
Download on the App StoreDownload on Google PlayQuestions? Email [email protected] or reach out for volume pricing