Download Android Apps and Games
AppBrain
  • Apps
  • Apps being viewed right now Trending apps today Most popular apps All-time most downloaded apps Top rated apps
  • Intelligence ▾
    Intelligence overview → Track any Android app or your whole market
    Track & analyze
    Keyword Tracker & OptimizerTrack & improve Play rankings App Performance ReportOne-off PDF for any app StatisticsFree Android & Play market stats
    Promote your app
    Featured Apps App Links
  • Intelligence
  • Pricing
  • Dashboard
  • Sign up
  • Log in
Last updated on: 2026-05-04
Android Apps > Tools > Bullion Test
Bullion Test icon

Bullion Test

1.16
Timmy Brolin
4.05
278 reviews
10,000+
Downloads
$3.49

Tests gold and silver coins for authenticity using acoustic resonance analysis

Not recently updated — last update was on 2023-08-23. This app may no longer be actively maintained.
Bullion Test Screenshot 1 of 5
Bullion Test Screenshot 2 of 5
Bullion Test Screenshot 3 of 5
Bullion Test Screenshot 4 of 5
Bullion Test Screenshot 5 of 5

Alternative downloads for the Bullion Test app

Pingcoin - Coin Ping Test icon Pingcoin - Coin Ping Test
Pingcoin
3.9
Free
50,000+
Bullion.com icon Bullion.com
Bullion.com
4.2
Free
50,000+
Precious Coin Tester icon Precious Coin Tester
AUGer kit
3.6
Free
100,000+
Coinflation - Gold & Silver Me icon Coinflation - Gold & Silver Me
PCGS
3.9
Free
50,000+
Precious Metalz: Gold & Silver icon Precious Metalz: Gold & Silver
Zuback Productions
4.8
Free
500+
CoinScan - Coin Identifier icon CoinScan - Coin Identifier
NextKit
4.2
Free
5,000+
Gold detector - metal scan icon Gold detector - metal scan
VIETNAM TECHNOLOGY PROJECT
5.0
Free
500,000+
Drop The Coins icon Drop The Coins
Scanscapes
3.5
Free
1,000+

Bullion Test compared with similar apps

Keywords that only this app has

Resonance Frequencies Australian Expected Tap Eagle Buffalo Devices Microphone Record Fake Object Shape Material Ring Http American Edge Maple Leaf Philharmonic Lunar Swedish Diameter Produce High Selected Fingernail Device Report Needed False

Common keywords of similar apps

Coin App Test Silver Gold Sound Coins Detect Results Bullion

Keywords missing from this app

Metal Detector Price Magnetic Metals Hidden Finder Features Collection Prices Precious Treasure Detection Time Identifier Scan Identify Real Stud Discover Objects Metallic Phone Easy Tool Alerts Field Ping Seconds Instant Precision Recent Spot Items Subscription Melt Jewelry Treasures Sensor Hunt

About Bullion Test

Bullion Test is a tools app developed by Timmy Brolin.

How many times has Bullion Test been downloaded?

Bullion Test has been downloaded 14 thousand times. In the last 30 days, the app was downloaded 15 times.

What is the rating of Bullion Test?

Bullion Test is rated 4.05 out of 5 stars, based on 280 ratings.

Is Bullion Test free?

Bullion Test costs $3.49 to download. The APK download size is 9.11 MB. The latest version available is 1.16. The last update was on August 23, 2023.

What are the requirements for Bullion Test?

Bullion Test requires Android 2.2+ or higher. The app has a content rating of Everyone. The app has been available on Google Play October 2013.

Description
This app offers a cheap and easy to use method to help detect fake bullion coins, by examining their resonance frequencies.

The resonance frequencies of an object are determined by the objects shape and material. If the shape and weight of a silver coin is correct, but the material is not actually silver, then a resonance test could detect this.
This is also known as a "ring test" or "ping test".

Unlike the manual "ring test", this app does not require that the user knows exactly how each coin should sound. The app will also detect resonance frequencies above the range of human hearing.

This youtube video shows how to use this app:
http://www.youtube.com/watch?v=5pZnqp3bl3A

Currently, these coins are supported:
1oz American Silver Eagle
1oz Silver Buffalo, flat edge
1oz Silver Buffalo, reeded edge (Sunshine mint)
1oz Liberty Silver
1oz African Wildlife Elephant
1oz Silver Maple Leaf
1oz Philharmonic
1oz Australian Kookaburra
1oz Australian Koala
2oz Australian Lunar
1oz Chinese Panda
Swedish 100kr commemorative
Swedish 5kr 1954-71
Morgan and Peace silver dollars
1oz Krugerrand
1oz Australian Gold Kangaroo
1oz American Gold Eagle
1oz Gold Vienna Philharmonic
1oz Gold Lunar
1oz Gold Buffalo
1oz Gold Maple Leaf
$20 Double Eagle gold coin
20 Franc gold coin
Brittish sovereign gold coin

There is also a "generic" feature wich supports ALL .999 1oz silver coins with diameter 36-42mm.
Just enter the diameter of your coin, and the app will automatically calculate what it's resonance frequencies are.


How to use this app:
1. For best results you should perform this test in a reasonably silent room. Some electronic devices may produce high-pitch noises which could interfere with the test.
2. Select the type of bullion coin to test from the drop-down list.
3. Press the microphone button to start the test.
4. Blue lines indicate the expected resonance frequencies of the selected coin.
5. Balance the coin on your finger, near the microphone of your smartphone. Tap the coin using your fingernail, or use some hard object. Do NOT use a second coin to tap the first one, since the sound from the second coin may affect the results. The sound level required depends on the sensitivity of the microphone in your Android device. For most devices is it sufficient to gently tap the coin with your fingernail.
6a. If the sound matches the expected resonance frequencies of the selected coin, you will see a green check-mark.
6b. If there is too much noise, or if the sound does not match the expected frequencies, then you will se a red cross.
6c. Some Android devices have microphones which are unable to record high frequencies above ~10kHz. If the app detects two out of three expected frequencies, it will indicate this with the fraction "2/3", and report that device limitations might be the reason why the last frequency was not detected.
7. Some practice may be needed to produce a clean enough sound from the coin. The app is sound-activated, you can tap the coin again to do another test.

Needed permissions:
Record audio - To record the sound of the coin.
Storage - Necessary to enable "sharing" of test results.

Disclaimer:
There are no guarantees whatsoever regarding the function and accuracy of this app.
There are many factors which could cause this app to report false positive or false negative results.
This app should only be used to complement other testing methods, not replace them.

Forum thread for discussions and information about this app:
http://forums.silverstackers.com/topic-38955-android-app-uses-resonance-test-to-detect-fake-silver-coins.html

Recent changes:
Updated to support latest Android version
Show more Show less

More data about Bullion Test

Price $3.49
Total downloads 14 thousand
Recent downloads 15
Rating 4.05 based on 280 ratings
Ranking Medium ranked
Version 1.16
APK size 9.11 MB
Number of libraries 1
Designed for Android 2.2+
Suitable for Everyone
Ads NO ads

App Performance Report

Get a detailed PDF report for Bullion Test with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Google Play Rating history and histogram

170
46
16
0
43

Downloads over time

Bullion Test has been downloaded 14 thousand times. Over the past 30 days, it has been downloaded 15 times.

Changelog of Bullion Test

  • Aug 23, 2023UpdateVersion 1.16
  • Sep 17, 2022Price DropNew price: $3.49 ($4.24)
  • Sep 9, 2022Price IncreaseNew price: $4.24 ($3.49)
  • Apr 18, 2022Installs10,000+ installs
  • May 15, 2021Price DropNew price: $3.49 ($3.56)
  • May 2, 2021Price IncreaseNew price: $3.56 ($3.49)
  • May 1, 2021Price DropNew price: $3.49 ($3.56)
  • Apr 23, 2021Price IncreaseNew price: $3.56 ($3.49)
  • Aug 29, 2020Price DropNew price: $3.49 ($3.66)
  • Aug 28, 2020Price IncreaseNew price: $3.66 ($3.49)
  • Aug 14, 2020Price DropNew price: $3.49 ($3.66)
  • Aug 13, 2020Price IncreaseNew price: $3.66 ($3.49)
  • Jul 31, 2020Price DropNew price: $3.49 ($3.66)
  • Jul 30, 2020Price IncreaseNew price: $3.66 ($3.49)
  • Jun 18, 2020Price DropNew price: $3.49 ($3.66)
  • Jun 17, 2020Price IncreaseNew price: $3.66 ($3.49)
  • May 21, 2020Price DropNew price: $3.49 ($3.66)
  • May 20, 2020Price IncreaseNew price: $3.66 ($3.49)
  • Apr 23, 2020Price DropNew price: $3.49 ($3.66)
  • Apr 22, 2020Price IncreaseNew price: $3.66 ($3.49)
  • Sep 11, 2019Installs5,000+ installs
  • Aug 19, 2017Price IncreaseNew price: $3.49 ($3.09)
  • Aug 15, 2017UpdateVersion 1.14
  • Jan 24, 2017UpdateVersion 1.13
  • Jan 8, 2017UpdateVersion 1.12
  • Dec 7, 2015Price DropNew price: $3.09 ($3.22)
  • Oct 5, 2015Installs1,000+ installs
  • Sep 26, 2015UpdateVersion 1.11
  • Mar 22, 2015UpdateVersion 1.8
  • Feb 18, 2015Installs500+ installs
  • Jul 3, 2014Price IncreaseNew price: $3.22 ($3.00)
  • Jul 3, 2014UpdateVersion 1.7
  • Oct 4, 2013New AppVersion 1.5 in Tools for $3.00
Show more Show less

Developer information for Timmy Brolin

Timmy Brolin

appsupport@brolinembedded.se

Website

N/A

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.
I'm the developer of this app

Share Bullion Test

Comments on Bullion Test for Android

★★★★★ Good app would be better if it included more coins like the silver britannia from before and after 2013, it would also be good if the user could fine tune the generic coin test to change the purity and weight and then test it
★★★★★ Excellent app and provides a lot of confidence the only thing I would add is the ability to test more coins of style and size.
★★★★★ Works well for the supported bullion. Wish there were more fractional options.
★★☆☆☆ SCAM! Paid for app via Google Play and nothing installed to my Samsung G7. The only option it gives is "Refund" rather than "Install". When I click "Refund" Google says "We cannot provide a refund for this purchase because it is not supported by our policy." What a waste of time and a few bucks.
★★☆☆☆ Need fractional such as gold 1/10, 1/2 oz, 1/4, gold eagles. 1/10 gold maples etc
★★☆☆☆ The app cannot distinguish between Krugerrand, maple and American Eagle coins. Except that it's useful. There are the most popular coins but from a paid app, I would expect much more choices. Thus, 2 stars instead of 3 or 4.
★★☆☆☆ An abandoned app that used to work and the developer didn't care for all of us who PAID for it!
★★☆☆☆ Showed a counterfeit Morgan as legit. The Morgan failed the silver-slide test and my coin shop verified that it is bogus. No updates for Galaxy S20 so maybe this is the reason.

Google Play Rankings for Bullion Test

Top rankings

Rank Country Category List
144 Netherlands Tools Top Grossing
Show all market rankings

Ranking history in Netherlands

AppBrain offers valuable information about your app and those of your competitors. Join AppBrain for free and claim this app to view more ranking data, view history etc.
I'm the developer of this app

Technologies used by Bullion Test

Bullion Test is requesting 2 permissions and is using 2 libraries.

Permissions

Hardware controls
record audio
Extra
se.brolinembedded.bulliontest.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core Android Library IconAndroid Jetpack core
Apps other people are watching Apps on sale Top new apps Popular Tools Apps Today's trending apps
Pingcoin - Coin Ping Test icon Pingcoin - Coin Ping Test
Bullion.com icon Bullion.com
Precious Coin Tester icon Precious Coin Tester
Coinflation - Gold & Silver Me icon Coinflation - Gold & Silver Me
Precious Metalz: Gold & Silver icon Precious Metalz: Gold & Silver
CoinScan - Coin Identifier icon CoinScan - Coin Identifier
Gold detector - metal scan icon Gold detector - metal scan
Drop The Coins icon Drop The Coins

Back to top
AppBrain Intelligence premium content

Subscribe now to get full and unlimited access to AppBrain Intelligence. You'll have access to:

  • App Intelligence dashboard (performance timeline, competitor comparison, country rankings, insight cards)
  • Detailed ranking data per app
  • Full timeline per developer
  • Device market shares data per country
1 Month

$75/mo
(billed every month)

SAVE 0%
Subscribe
3 Months

$65/mo
($195 billed every 3 months)

SAVE 13%
Subscribe
1 Year

$57.50/mo
($690 billed every year)

SAVE 23%
Subscribe
Each subscription will automatically renew 3 days before the expiration date for the same time period. Subscriptions can be cancelled at any time before the renewal.

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps

  • Top Android apps being viewed
  • Real Driving School Car Games
  • Casino Joy
  • ezykam+

Android Statistics

  • Android statistics
  • Google Play Developer stats
  • Trending Android Apps
  • Top popular Apps
  • Buy the best Android phone

About AppBrain

  • Contact
  • Privacy
  • Documentation
  • DMCA takedowns
  • Articles
  • Blog
  • Top Free Games Apps for your iPhone or iPad
© 2010-2026 - AppBrain