Precious Coin Tester

In-app purchases
412 reviews
Content rating
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About this app

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!

You can choose your coin from a catalog including more than 30,000 coins**, where more than 100 of them are free. Nothing found in the catalog? Defining coin's parameters by your own is also another option**!

- 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:

- Which results are good?
2~3 stars are considered as good results. Otherwise, you should be cautious.
[New🔥] Spot a 3-star false positive and you may win a $30 reward! Details:

- Want more details?
Please visit

- Does not work on your device?
Please don't hesitate to reach us:, 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
Dec 4, 2023

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, Audio and 2 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

405 reviews
Gargantua Blargg
January 4, 2022
UI needs work on entering coin name/characteristics. Keeps clearing fields when trying to set a coin. Coin verification is opaque, just giving stars without showing e.g. a spectrogram with the peaks and expected peaks as some other testing apps do. The database is absolutely immense compared to other coin tester apps, though. ...and now it refuses to open saying it must be updated, but the update requires a newer version of Android.
12 people found this review helpful
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AUGer kit
May 8, 2021
Hello, Thanks for your feedback! We will try to make the scoring more transparent. Some users prefer re-entering the whole fields, whereas others preferring editing it. We have chosen the former behavior since most of the fields require only few taps except "keywords". We have made "keyword" field editable from version 0.10.2. Best regards,
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.
27 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.
Lloyd Rowe
March 8, 2024
I find this app very helpful..I used the free version until I started adding some additional coins not covered in the free version. I am now a happy full version subscriber. Thanks 😊
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AUGer kit
April 4, 2024
Thank you for your wonderful review and your generous spirit of support! We're deeply grateful for your willingness to contribute and your ongoing engagement with our project. If you have any further questions or if there's anything we can assist you with, please feel free to reach out via email. :)

What's new

[Important] We've added coins issued in 2023.
[Important] Fixed misplacement of Czech Republic coins.
[Normal] Added "3-star" and "verified" markers to more coins.