Precious Coin Tester vs Sigma Mini
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Precious Coin Tester
This app helps you test the authenticity of gold and silver coins by analyzing the sound they make when pinged. It provides detailed results to distinguish genuine coins from fakes, helping you avoid costly mistakes.
- Test gold and silver coin contents
- Detect counterfeit coins
- Access large coin database
- Full-text search of coin database
- Customize coin parameters
- High-precision results
Read full descriptionHide full description
Test precious metal contents in gold coins and silver coins: - Detected countless fakes and saved users thousands of dollars in 2024 - Over 600 free coins available now! - Access 2000+ coins with high-precision results! - Full-text search through a massive up-to-date database of over 40,000 coins! - Customize your own coin parameters - tailor every detail! 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 uniquely developed 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/ Your suggestions and comments are highly welcome! *The result is only for informational propose, all decisions made based on this information are at users' own risks.
Sigma Mini
This utility app connects to a specific hardware device for enhanced functionality. It allows users to interact with and control the connected device, providing a seamless experience for its intended purpose. The application is designed for users who own the associated hardware.
- Connects to Sigma Metalytics Mini
- Device interaction and control
- Enhanced functionality for users
- Seamless user experience
Read full descriptionHide full description
App to be used with the Sigma Metalytics Mini
Screenshots
Verdict
The clearest difference is rating: Precious Coin Tester at 4.5 against Sigma Mini's 4.0. Precious Coin Tester also leads on ratings volume (536 vs 4) and update cadence (fortnightly vs every 2 months). Sigma Mini's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 17.0). On price, ads and device support 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
Both are free to download. Precious Coin Tester sells 1 in-app purchase, starting at $2.99 per month. Sigma Mini asks for nothing beyond the download.
Precious Coin Tester holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Precious Coin Tester has 536 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 48% of Precious Coin Tester's written reviews are positive against 38% of Sigma Mini's.
Precious Coin Tester ships an update fortnightly, Sigma Mini every 2 months. Both last shipped on October 24, 2026.
| Parameter | Precious Coin Tester | Sigma Mini |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (536 ratings) — better | 4.0 (4 ratings) |
| Positive reviews | 47.5% of reviews — better | 37.5% of reviews |
| Number of ratings | 536 — better | 4 |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 72 MB | 6 MB |
| Age rating | 12+ | 4+ |
| Developer | AUGer kit | Richard Bessette |
Customer experience
Precious Coin Tester
Sigma Mini
Bugs and requests
Precious Coin Tester
Reported bugs
9 issues- Network error messages preventing app use
- App crashes frequently
- Search returns zero or inconsistent results
- Coin detection fails or gives wrong results
- Server downtime and connectivity issues
Show 4 moreShow fewer
- False positives identifying wrong coins
- Inconsistent results on same coins
- Difficulty selecting regions due to sensitivity
- Missing 2023 coins from database
Requested features
10 requests- One-time purchase option instead of subscription
- Save frequently used coins for quick access
- Improved search with keyword table of contents
- Categorized coin database by region
- Updated coin database through 2023+
Show 5 moreShow fewer
- Better search functionality and filters
- Free daily testing limits for casual users
- Manual feature with improved accuracy
- Ability to use special parameters without description
- Better documentation and user instructions
Sigma Mini
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Precious Coin Tester
- Unlock all coins 1 month$2.991 Month
Sigma Mini
No in-app purchases
Questions
Is Precious Coin Tester free?
Is Sigma Mini free?
Which has better reviews, Precious Coin Tester or Sigma Mini?
Do Precious Coin Tester or Sigma Mini have ads?
Which is updated more often, Precious Coin Tester or Sigma Mini?
Other comparisons
