Table Of Contents
Latest update [menu]
Added support for APMEX 1oz Silver Round
Quick and dirty fix for microphone sensitivity issues (better fix coming soon)
Description [menu]
Pingcoin is the digital version of the classical "ping test" for catching counterfeit coins. By recording and analyzing the sound produced by your coins the app is able to tell you if the coin is genuine or fake.
If you've ever found yourself not quite 100% sure about a coin's authenticity, try the ping test with the Ping Coin app. It will prevent you from getting fooled by counterfeit coins and it you will have peace of mind purchasing from even the shadiest coin sellers at fairs and garage sales.
How it works
A coin, like a musical instrument, produces a characteristic sound. Like a musical instrument this sound depends on its shape and on the material it's made out of. A wooden flute sounds different compared to a copper one. Similarly two coins of the same size and weight will sound differently based on the material they're made of.
The app will compare the characteristic sound of your coin (usually comprised of three frequencies) to my reference values. For each coin and for each frequency a tolerance threshold is displayed. If your coin's frequencies fall within the thresholds, it will almost certainly be genuine!
Important notes:
- The ping test works best as a complementary test to other tests. Do not rely solely on the ping test. Instead, combine it with a visual inspection and (ideally) weight and diameter measurements.
- Some coins of different composition, due to the variability in the coins' minting process and their natural wear, have practically indistinguishable sounds. A gold 1 oz Kangaroo and a silver 1 oz Kookaburra, for instance, will have practically indistinguishable resonance frequencies. Please note that this means that a test intended for one coin will work on the other and vice versa. This is why you cannot rely solely on the ping test.
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How to ping your coin
https://youtu.be/b4LbRGKTNiE
Pinch the coin at its center keeping the surface area of your fingers to a minimum. (Imagine that the coin vibrates at the sides but stays fixed at its center.) Then flick the coin with a finger from your other hand. This can be done very softly. Don't worry if the sound is shorted and muffled, your smartphone mic will pick it up anyway.
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Coins currently supported
- Gold South-African Krugerrand (1 oz)
- Gold American Eagle (1 oz)
- Gold Austrian Corona (100)
- Gold Canadian Maple Leaf (1 oz)
- Gold Great Britain Britania (1 oz)
- Gold Australian Kangaroo (1 oz)
- Gold Chinese Panda (1 oz)
- Gold Iranian Bahar Azadi
- Gold APMEX Round (1/4 oz)
- Silver Australian Koala (1 oz)
- Silver Britannia (1 oz)
- Silver American Buffalo (1 oz)
- Silver American Peace Dollar [alpha]
- Silver American Morgan Dollar [alpha]
- Silver Cook Islands Bounty (1 oz)
- Silver American Eagle (1 oz)
- Silver Somalian Elephant (1 oz)
- Silver Australian Kookaburra (1 oz)
- Silver Canadian Maple Leaf (1 oz)
- Silver Chinese Panda (1 oz)
- Silver Austrian Philharmonic (1 oz)
- Silver Australian Lunar Rooster (1 oz)
- Silver Tuvalo (1 oz)
- Silver Swedish 5 Kronor [alpha]
- Silver Franklin Half Dollar
- Silver Walking Liberty Half Dollar
- Silver Mexican Libertad
- Silver Morgan Dollar
- Silver Peace Dollar
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Submit new coins
Use the "Submit a coin" feature inside the app to submit a recording for a new coin to be added. Once the ping has been analyzed, the coin will appear in the list.
Any other feedback (send an email via the app) is GREATLY appreciated.
How to install Pingcoin APK for Android [menu]
Download Pingcoin APK file (com.pingcoin.android.pingcoin_41_6348374.zip) from SameAPK.com, then follow these steps:
Update Phone Settings
- Go to your phone Settings page
- Tap Security or Applications (varies with device)
- Check the Unknown Sources box
- Confirm with OK
Go to Downloads
- Open Downloads on your device by going to My Files or Files
- Download Split APKs Installer (SAI)
- Download and unzip file you already downloaded (com.pingcoin.android.pingcoin_41_6348374.zip)
- Open Split APKs Installer and follow steps on this app.
- Tap Install when prompted, the APK file you downloaded will be installed on your device.
How to install Pingcoin APK on Windows 7/8/10 or MAC PC? [menu]
Download Pingcoin APK file(com.pingcoin.android.pingcoin_41_6348374.zip) from SameAPK.com to your PC (ex: /Users/xxx/Downloads/(com.pingcoin.android.pingcoin_41_6348374.zip)), then follow these steps:
Using Emulator:
- Download And Install one Emulator Softwares (Ex: Bluestacks, GenyMotion, NoxPlayer)
- Download and unzip file com.pingcoin.android.pingcoin_41_6348374.zip.
- Using ADB or Split APKs Installer same as install for Android.
Pingcoin APK Pros & Cons [menu]
Pros
- This app is safe, it's not require high risk permissions
- Compatible with 32 bit device (most Emulator using 32bit arch CPU)
- Compatible with 64-bit device (some android device and current Bluestacks)
Cons
Everything is good.
