Precious Coin Tester

In-app purchases
3.5
489 reviews
100K+
Downloads
Content rating
Everyone
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About this app

Test precious metal contents in gold coins and silver coins:
🎉 Over 600 free coins available now!
🥇 Access 2000+ coins with high-precision, semi-quantitative results**!
🔍 Full-text search through a massive up-to-date database of over 40,000 coins**!
🛠️ Customize your own coin parameters—tailor every detail**!

- Why use it?
When you get a silver or gold coin with correct weight and size, how can you know it is not a fake coin made of other cheap materials? Traditional ping tests can distinguish true gold or silver coins from counterfeit ones in cheap metal. But you need good ears!

Precious coin tester helps you listen to the sound generated by the ping test and will tell you whether the coin is a cheap metal fake*. So no more worry about the fake gold or silver coin!

- How to ping the coin?
Hold the coin on the tip of one finger near the mic of your phone/tablet, and knock the coin briefly with another hard object. Hold still the coin while it rings. When the sound of coin has diminished, knock it again.
Tutorial video: https://youtu.be/iWIJ7Ke50-M

- Which results are good?
Both 2 and 3 stars are good results:
⭐⭐ 2 star offers standard/traditional ping test result, it indicates that the sound of the coin matches that of a genuine one. It is a qualitative result.
⭐⭐⭐ 3 star is our unique high precision result, it indicates metal content error is under 10% for silver and under 5% for gold.

🤑 Spot a 3-star 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?
Please visit 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!

Best regards,

* 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
Aug 15, 2025

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

3.5
480 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.
46 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.
45 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.
Darth Tormis
May 27, 2025
I'm new to the app, so will start it off in the middle. I think it is a fantastic idea, and the longer the users send in data, the more refined it will become. I have already found my first incorrect, repeatable reading and am about to see how the process of reporting the error goes. I am very curious if the paid version has any entries for private mint rounds/bars (might not be feasible, even for only a few popular ones due to inconsistency). I will update rating after experience with the app.
1 person found this review helpful
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AUGer kit
May 27, 2025
Hello, thanks for your detailed review! We are searching for incorrect results :) Could you please report the incorrect one by mail (preciouscointester@hotmail.com)? You may win a $100 reward! (details: https://www.preciouscointester.com/en/challenges/3-star-quest/round2). PS: You can get 100 points after account registration to try on rounds.

What’s new

[Medium] Improved user interface for better usability