Comparison

PCGS Set Registry vs StackerTools Coin and Bar Test

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PCGS Set Registry

Manage your PCGS-graded coin collection with this free app. Upload coin images, track purchase details, and compete with other collectors for the best sets. Supports U.S. coins and offers features like barcode scanning and a coin database.

Highlights
  • Organize PCGS-graded coin collections
  • Upload coin images and details
  • Compete for best set rankings
  • Scan cert verification codes
  • Use 'What If?' function for upgrades
  • Search U.S. coin database
  • Track sold coins
Features
Read full description

Coin collectors, organize your entire PCGS-graded coin collection in this free, easy-to-use collection management app. Upload coin images and compete for the best sets with fellow numismatists from the convenience of your iPhone or iPad. Whether you collect rare or modern U.S. coins, the PCGS Set Registry app offers an extensive list of sets to choose from, allowing you to quickly begin adding your cents, nickels, quarters, half dollars, dollars and commemoratives to the app. Stay organized and edit your coin’s information by uploading images, adding your purchase dates, purchase prices, current coin values, comments, notes and more. Did you sell a coin from your collection? No problem! Simply change its status from “active” to “sold” and add the buyer’s name, sale date and sold price! Stay organized as you buy and sell your silver, gold and platinum coins. Improve your coin collecting experience with an extensive feature list: · Add coins to your collection with the Quick Add feature by scanning the cert verification code with your iPhone or iPad. · Scan a PCGS-graded coin’s barcode to determine whether or not it will upgrade your set using the “What If?” function · Search our U.S. coin database to autofill your coin details · Manage your collection & review set rankings and completion percentages · Compare your sets with other users within PCGS Set Registry · Earn Medals for completing Achievements as you progress App requires internet connection to use. For more information on this and other PCGS apps, visit http://www.pcgs.com/apps.

About

StackerTools Coin and Bar Test

Detect counterfeit precious metals like gold, silver, and bullion using sound. This tool acts as a bar and coin tester, helping you verify authenticity.

Highlights
  • Counterfeit detection
  • Verify gold coins
  • Verify silver coins
  • Test bullion
  • Sound-based analysis
  • Bar and coin tester
Features
Read full description

Counterfeit Detection: Verify Gold Coins, Silver Coins, Rounds and Bars with Sound. StackerTools is a coin and bar tester that listens to the “ping” of your precious metals. Gently tap a coin and the app compares its ring with verified genuine examples, or tests it against a physics-backed acoustic model. The app is 100% included with the Pocket Pinger. The password is in the Bonus Pack. WHAT YOU CAN TEST • Gold and silver bullion coins such as American Eagles, Maple Leafs, Krugerrands and more • Silver rounds and 1 oz silver bars • Many other items and tests available, with more coming HOW IT WORKS Pick your coin or bar from the catalog, or search for it. Tap Start and gently ping the item. See the result in seconds: PASS, OK, CAUTION, or FAIL, with tips when a retest is needed. TEST MODES • Peaks: checks the item’s key ring tones • Run: tests several pings in a row • Pro: adds ping-time checks plus size and weight • Acoustic Models: measure your items for custom tests MORE FEATURES • Bookmark Favorites to find the items you test most • Search the catalog, with “See All” keeping your search • Sync the catalog to your phone for offline testing • Get Paid: upload test data and photos, or post new items to the catalog Questions? We’re here to help: Support@StackerTools.com

Screenshots

PCGS Set Registry4 screens
StackerTools Coin and Bar Test4 screens

Verdict

The call

The clearest difference is monetization model: StackerTools Coin and Bar Test at free against PCGS Set Registry's free with in-app purchases. StackerTools Coin and Bar Test also leads on review sentiment (89% vs 80%). PCGS Set Registry's advantage is rating (4.8 vs 4.5) and ratings volume (2.1K vs 44). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PCGS Set Registry holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: PCGS Set Registry has 2.1K ratings behind it against 44, so its average is the more settled of the two. Written reviews complicate that: 80% of PCGS Set Registry's written reviews are positive against 89% of StackerTools Coin and Bar Test's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

PCGS Set Registry ships an update every 3 weeks, StackerTools Coin and Bar Test every 2 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
PCGS Set Registry versus StackerTools Coin and Bar Test: the parameters behind the verdict, then further details
ParameterPCGS Set RegistryStackerTools Coin and Bar Test
PriceFreeFree
Rating4.8 (2.1K ratings) — better4.5 (44 ratings)
Positive reviews80.0% of reviews88.9% of reviews — better
Number of ratings2.1K — better44
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.6
Further details — not scored
Size25 MB31 MB
Age rating4+4+
DeveloperPCGSSoundMoneyMetals

Customer experience

PCGS Set Registry

All ratings2,038 ratings
Positive95.5%
Neutral1.9%
Negative2.6%
Written reviews120 reviews
Positive80.0%
Neutral8.3%
Negative11.7%

StackerTools Coin and Bar Test

All ratings44 ratings
Positive86.4%
Neutral2.3%
Negative11.4%
Written reviews18 reviews
Positive88.9%
Neutral5.6%
Negative5.6%

Bugs and requests

PCGS Set Registry

Reported bugs

3 issues
  • Inventory not accurately reflecting owned coins
  • Duplicate coin entries appearing in collection
  • Quick add feature not consistently working

Requested features

4 requests
  • Allow adding non-PCGS graded coins to sets
  • Improve search and filtering options
  • Implement better organization tools (folders, tags, etc.)
  • Provide more detailed pricing and market data

StackerTools Coin and Bar Test

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

PCGS Set Registry

No in-app purchases

None

StackerTools Coin and Bar Test

No in-app purchases

Questions

Is PCGS Set Registry free?
PCGS Set Registry is free to download, with no in-app purchases.
Is StackerTools Coin and Bar Test free?
StackerTools Coin and Bar Test is free to download, with no in-app purchases.
Which has better reviews, PCGS Set Registry or StackerTools Coin and Bar Test?
PCGS Set Registry is rated higher. PCGS Set Registry averages 4.8 out of 5 from 2.1K ratings, while StackerTools Coin and Bar Test averages 4.5 from 44 ratings.
Do PCGS Set Registry or StackerTools Coin and Bar Test have ads?
Neither PCGS Set Registry nor StackerTools Coin and Bar Test shows ads.
Which is updated more often, PCGS Set Registry or StackerTools Coin and Bar Test?
PCGS Set Registry ships an update every 3 weeks, and StackerTools Coin and Bar Test every 2 weeks. Most recently, PCGS Set Registry was updated on November 1, 2026 and StackerTools Coin and Bar Test on October 30, 2026.

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