CoinKnow: Coin Identifier

CoinKnow: Coin Identifier

coin value checker & scanner

1.2K ratings
26 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • December 8, 2025
  • July 10, 2026

Features

CoinKnow: Coin Identifier screenshot #1 for iPhone
CoinKnow: Coin Identifier screenshot #2 for iPhone
CoinKnow: Coin Identifier screenshot #3 for iPhone
CoinKnow: Coin Identifier screenshot #4 for iPhone
CoinKnow: Coin Identifier screenshot #5 for iPhone
CoinKnow: Coin Identifier screenshot #6 for iPhone
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About

Identify and assess the value of your coins with advanced scanning technology. Get instant market value estimates, grading recommendations, and detailed error analysis from a single photo. Manage your collection and discover hidden treasures.

Accurate coin scanning
Copper designation detection
Proof finish recognition
Rare variety recognition
Instant value assessment
Collection management tools
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What's New in CoinKnow

2.0.0

July 10, 2026

Refreshed interface and improved visual design for a smoother experience. Added Popular This Month to help you discover trending coins. Introduced a new tag system for coin attributes including Type, Finish, Color, Strike, and Variety - tap any tag to learn what it means.

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Subscription plans

Premium Annual

Annual paid premium plan for unlimited access Coinknow

$38.991 Year
7 Days trial
How to cancel CoinKnow subscription ⁉️

User reviews

Kept giving the same response

Every time I checked a penny especially one in decent shape- it gives the correct response- but when I would do the back of the coin every response was that the coin was a “ wheatie” from the early 1900’s. Had the same issue with Roosevelt dimes.

Response from developer

Thank you for your feedback. We're sorry about the repeated misidentifications when scanning the reverse side of your pennies and Roosevelt dimes. For better results, try using a plain, contrasting background with even lighting, and avoid glare or shadows that may obscure design details. We've flagged this pattern to our development team for investigation. If issues persist, please contact our support team directly so we can look into your specific scans. We appreciate your help in improving the app!

I mean it is a joke it didn’t work at all

This app did not work even a little bit it didn’t scan a single coin correctly and it costs money to scan them

Response from developer

Thank you for taking the time to share this, and we're sorry the results didn't meet your expectations. Recognition accuracy can depend on factors such as lighting, focus, and the angle of the photo. So that we can look into the specific results you experienced, please contact our support team with the coins you tried and the photos you used, and we'll address it promptly. We appreciate your patience and want to help you get reliable results.

Camera doesn’t take pictures well.

Haven’t gotten to get a good picture . Then , you’re wanting more money for a different membership that was never explained really !

Response from developer

Thank you for taking the time to write, and we understand the frustration. Our priority is getting the camera working for you. Recognition depends on a clear, in-focus image, and our support team can share a few practical tips to help. Once you're getting reliable results, we're also happy to explain exactly what each plan includes so there are no surprises. Please reach out to our support team and we'll help you get this resolved.

Not worth paying for

Needs improvement

Response from developer

Thank you for your feedback, and we're sorry to hear the app hasn't met your expectations. We'd genuinely like to understand which areas you feel need improvement, whether it's recognition accuracy, pricing, features, or something else. Your input would help us identify where we can do better. Our team is continually working to enhance the app, and feedback like yours plays an important role in that process. Should you wish to share more details, please feel free to reach out anytime.

Waste of my money

Wish I hadn't purchased Just a waste of my money another thing that takes your money and no response or no difference from the free app

Response from developer

Hi, thanks for sharing your feedback, and we're sorry to hear about your experience. Premium membership is designed to provide meaningful value beyond the free version, including unlimited scans and full access to detailed coin information. We'd genuinely like the chance to look into this for you and make it right—please reach out to our support team so we can assist directly.

Developer apps

FAQ

What does CoinKnow do?

CoinKnow is a mobile application that uses advanced scanning technology to identify coins and assess their value. It provides accurate grading precision, market value estimates, and detailed analysis of coin specifications and potential errors.

What are the key features of CoinKnow?

Key features include accurate coin scanning with grading precision, detection of copper conditions and proof finishes, recognition of rare varieties, and automatic error detection. It also offers instant value assessment from a single photo, full coin specifications, and collection management tools.

Is CoinKnow free to use?

The app offers a free daily scan allowance for users. Additional features and advanced capabilities may require in-app purchases, as indicated by the app's monetization model.

Who is CoinKnow for?

This app is designed for coin collectors, hobbyists, and anyone interested in identifying and determining the value of coins. It's useful for examining inherited coins, purchased collections, or even pocket change to discover potential treasures.

How accurate is the coin identification?

The app provides grading precision within a 2-point range on the Sheldon Scale (1-70), ensuring reliable coin value assessments. Advanced algorithms are employed for accurate coin identification and professional evaluation results.