Precious Coin Tester

In-app purchases
3.6
528 reviews
Content rating
Everyone
100K+
Downloads
Content rating
Everyone
Learn more
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About this app

Discover the truth about your gold and silver coins with our Precious Coin Tester app:

🎉 Free Access to over 600 Coins - Start testing immediately!
🥇 High-precision for over 3,000 coins with semi-quantitative results.
🔍 Rich database containing over 40,000 coins.
🛠️ Custom Parameters - Customize testing parameters to suit any coin's unique attributes.

Not sure if your coin is genuine or a counterfeit? Our app simplifies authenticity checks. Unlike traditional methods that require a fine ear for sound, Precious Coin Tester analyzes the sound from a simple "ping" test and determines if your coin is made from precious metals or cheaper materials. No more uncertainties about your coin's authenticity!

How It Works:

1. Place your coin on the tip of your finger near your device’s microphone.
2. Tap the coin with a hard object and let it ring.
3. The app listens and analyzes the sound. Knock again when the ringing stops.

What Do the Results* Mean?
0-star: Negative result
1-star: Warning zone. You may need probably double check input parameters.
2-star: Your coin’s sound matches that of a genuine coin.
3-star: High-precision result: metal content error is under 10% for silver and under 5% for gold.

Differences between 2 Stars and 3 Stars?
2-star is a qualitative positive result. It is what traditional ping test offers.
3-star is our unique high precision result. It states clearly the metal content expectations.
🤑 Spot a 3-stars false positive and you may win a $100 reward! Details: https://preciouscointester.com/en/3_star_quest/round2/3_star_quest.html

- Want more details?
Check out our tutorial for a step-by-step guide: https://youtu.be/iWIJ7Ke50-M
Please visit our website: https://preciouscointester.com/en/

- Does not work on your device?
Please don't hesitate to reach us: preciouscointester@gmail.com, we will try our best to help you!

Your suggestions and comments are highly welcome!

* The result is only for informational propose, all decisions made based on this information are at users' own risks.
** Subscription is needed to test all coins in the database, as well as customized coins.
Updated on
Jul 19, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.6
519 reviews
Orlando Diaz
June 30, 2022
Was free, now wants subscription. It literally just needs to do one thing which shouldn't even require internet for an app to do. So no. This doesn't require maintenance. It's always the same thing. You ding a coin and it interprets. End of story. I'll do a 1-time purchase, not a subscription. Uninstalled.
62 people found this review helpful
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AUGer kit
September 22, 2024
Good news! From v2.0.0, it is possible to create an account and try several tests across all the database & custom coin without subscription. Otherwise, each coin is different. We have to manage a big database and verify the parameters of coins (the "verified" mark), keep improving the precision for each coin, and add new coins each year.
Curtis Allison
June 7, 2022
Used to be great. Updated it to the newest version, and now SO MANY coins are locked unless you buy a subscription. 🤬 Even bought a pocket pinger for using it. I wouldn't be opposed to buying the app but MONTHLY subscription? Very expensive if you ask me. So if I want to check ONE coin that's locked, you need a subscription to check it.
53 people found this review helpful
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AUGer kit
June 2, 2022
Hello, the Precious Coin Tester app and pocket pinger are two different things. You don't need to buy a pocket pinger for using the app. Unfortunately many people misunderstood it. The subscription can be cancelled at any time, so you just need to pay the month you want to use it. Hope it can help.
Luke Ward
April 30, 2026
What is this new points system per coin ping test, absolutely ridiculous, I had paid for unlimted tests for a month and see no option for that again, I will not be using or purchasing anything on this app until the flat fees are back, charging per coin is ridiculous for those with many to test.
4 people found this review helpful
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AUGer kit
April 30, 2026
Hello, the subscription (flat rate) is still there. Maybe you just need to sync the app using "Restore Purchases" from subscription page. (Sometimes, the local data in the app is lost after cache cleaning etc). You can find more details on this page: https://www.preciouscointester.com/en/academy/subscription

What’s new

[Medium] Improved precision for many coins, enriched database
Content rating
Everyone
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App support

About the developer
AUGER KIT
preciouscointester@gmail.com
706 CHEMIN DE PEIDESSALLE 06560 VALBONNE France
+33 7 60 47 93 72