Comparison

Sigma Mini vs Coin Scanner

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

Head to head
About

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.

Highlights
  • Connects to Sigma Metalytics Mini
  • Device interaction and control
  • Enhanced functionality for users
  • Seamless user experience
Features
Read full description

App to be used with the Sigma Metalytics Mini

About

Coin Scanner

Instantly identify coins by snapping a photo. Get detailed information on value, rarity, and market trends. Explore numismatic history and learn with expert articles and an AI chatbot.

Highlights
  • AI coin identification
  • Coin value lookup
  • Detailed coin specifications
  • Pricing history and trends
  • Numismatic chatbot
  • Educational articles
Read full description

Coin Scanner & Value Checker is a powerful mobile app — your all-in-one AI-powered coin identifier and coin values checker app — for fast, reliable coin value lookups. What it does Snap a photo (both sides) or upload an image — our AI coin scanner matches it against a large catalog to return the coin identification value, current coins prices and values, and key details (mintage, metal, year, mint mark). It’s an easy app to value coins whether you’re sorting finds, doing a quick coin appraisal, or managing a collection. Identification process 1. Select or shoot: Choose from gallery or photograph the coin (obverse & reverse). 2. AI match: The app recognizes type, year, and mint, then estimates coin value. 3. Details & trends: View specifications, rarity notes, and pricing history to evaluate rare coins worth considering. Why collectors love it • Instant recognition: Point, scan, and identify rare coins and common issues alike — see which coins worth money. • Pricing insights: Review up-to-date coin value ranges, including mint coins value and market comps. • Pro tooling: Handy for coin collection valuation and quick checks (a true coin checker / coin value app). Instant Professional Grading Meet Grading—the ultimate tool for assessing coin condition instantly. Just snap a clear photo to receive a precise grade estimate and discover how preservation impacts its market price. It’s the easiest way to understand the exact state of your coins and maximize the value of your entire collection. Numismat Chatbot Ask anything about any coin — history, origin, metal, rarity, or current market value — and get instant answers from a true AI coin expert. Our smart chatbot helps you discover hidden treasures, learn fun facts, and understand what makes each coin unique. Useful Articles For those who are just getting acquainted with the world of numismatics, a section with useful articles has been created. The materials are designed for different levels — from beginners to professionals. The articles are updated regularly, making it a great way to expand your knowledge. Premium Subscription - Payment will be charged to your iTunes account upon confirmation of purchase. - The subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current period. - Your account will be charged for renewal within 24 hours before the end of the current period, and the renewal cost will be specified. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription, where applicable. - You can manage your subscriptions and turn off auto-renewal in your account settings after purchase. Privacy Policy: https://telegra.ph/Privacy-Policy-12-30-114 Terms and Conditions: https://telegra.ph/Terms-Of-Use-12-30-3

Screenshots

Sigma Mini4 screens
Coin Scanner4 screens

Verdict

The call

The clearest difference is in-app purchases: Sigma Mini at none against Coin Scanner's 16. Sigma Mini also leads on ads (none vs shown) and rating (5.0 vs 4.5). Coin Scanner's advantage is ratings volume (1.4K vs 2) and review sentiment (57% vs 38%). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Coin Scanner sells 15 in-app purchases, starting at $4.99 per 7 days. Sigma Mini asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sigma Mini holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Coin Scanner has 1.4K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 38% of Sigma Mini's written reviews are positive against 57% of Coin Scanner's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Sigma Mini ships an update every 2 months, Coin Scanner every 2 weeks. The most recent releases landed on October 17, 2026 and October 23, 2026 respectively.

Scorecard9 real differences · 2 level
Sigma Mini versus Coin Scanner: the parameters behind the verdict, then further details
ParameterSigma MiniCoin Scanner
PriceFreeFree
Rating5.0 (2 ratings) — better4.5 (1.4K ratings)
Positive reviews37.5% of reviews57.2% of reviews — better
Number of ratings21.4K — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank—#81 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size6 MB126 MB
Age rating4+4+
DeveloperRichard BessetteUMI GEVES LTD

Customer experience

Sigma Mini

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive37.5%
Neutral12.5%
Negative50.0%

Coin Scanner

All ratings1,353 ratings
Positive90.0%
Neutral3.0%
Negative7.0%
Written reviews152 reviews
Positive57.2%
Neutral3.9%
Negative38.8%

Bugs and requests

Sigma Mini

Not enough reviews yet to summarise bugs or requests.

Coin Scanner

Reported bugs

3 issues
  • Constant errors when scanning coins
  • Incorrect coin year identification
  • App crashes or kicks users out

Requested features

3 requests
  • Ability to identify error coins
  • Support for more coin types
  • Improved accuracy and reliability

In-app purchases

None

Sigma Mini

No in-app purchases

15 purchases

Coin Scanner

Subscriptions13
  • Coin scanner & price tracker$4.997 Days
  • Weekly Premium$4.997 Days
  • Weekly Trial$9.997 Days
Show 10 more
  • Coin scanner & price tracker7 Days trial$9.997 Days
  • Weekly Offer3 Days trial$9.997 Days
  • Monthly Premium$19.991 Month
  • Yearly Offer$29.991 Year
  • Coin Value Identifier2 variants$39.991 Year
  • Yearly Trial Premiun7 Days trial$49.991 Year
  • Yearly Intro1 Month trial$49.991 Year
  • Coin Value Identifier$49.991 Year
  • Yearly Premium Commitment$59.991 Year
  • Yearly Premiun Access$59.991 Year
One-time2
  • Coin Grading — Lifetime Access$9.99
  • Lifetime access$59.99

Questions

Is Sigma Mini free?
Sigma Mini is free to download, with no in-app purchases.
Is Coin Scanner free?
Coin Scanner is free to download, with in-app purchases available.
Which has better reviews, Sigma Mini or Coin Scanner?
Sigma Mini is rated higher. Sigma Mini averages 5.0 out of 5 from 2 ratings, while Coin Scanner averages 4.5 from 1.4K ratings.
Do Sigma Mini or Coin Scanner have ads?
Coin Scanner shows ads; Sigma Mini does not.
Which is updated more often, Sigma Mini or Coin Scanner?
Sigma Mini ships an update every 2 months, and Coin Scanner every 2 weeks. Most recently, Sigma Mini was updated on October 17, 2026 and Coin Scanner on October 23, 2026.

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