9 Best Free Coin Appraisal Apps for Coin Value
Ever found an old coin and wondered, “Is this worth anything?” You’re in luck! The best free coin appraisal apps can now tell you instantly—just snap a photo with your smartphone. These AI-powered coin scanner apps identify your coins, estimate their value, and even detect rare errors that could be worth serious money.
Whether you’re a serious collector or just curious about that quarter in your pocket, these coin identifier apps make discovering hidden treasures easier than ever. Let’s explore the top 9 coin value apps that’ll transform how you evaluate your collection!
The Best Free Coin Appraisal Apps – Quick Pick
- CoinKnow The most accurate coin value app and multi-source pricing from Heritage Auctions, PCGS, and eBay sales.
- CoinValueChecker Best coin value app for investment tracking with real-time price trends, auction alerts, and automatic error coin detection.
- Coinoscope Visual comparison expert with 1.7 million users, showing you similar coins side-by-side from 300,000+ worldwide database.
- Maktun Completely free coin identifier app with zero ads, covering 300,000+ coins and 160,000+ banknotes with offline functionality.
- PCGS CoinFacts Industry-standard reference tool from the most trusted grading authority, perfect for researching 39,000+ U.S. coins with professional pricing.
- Numiis History-focused coin appraisal app that tells the fascinating stories behind your coins with rich educational context.
- Heritage Auctions Shows real auction hammer prices instead of estimates, giving you genuine market values based on what collectors actually paid.
- CoinSnap Lightning-fast beginner-friendly coin scanner app with instant identification and the simplest interface for everyday use.
- NGC App Community connector that helps you network with collectors worldwide, verify certifications, and learn from experts.
The Best Free Coin Appraisal Apps Reviews
1. CoinKnow – Best Overall Coin Appraisal App
Best For: Beginner and collectors who need accuracy coin value
CoinKnow burst onto the scene in 2025 and quickly became a favorite among coin enthusiasts. This coin value app delivers Sheldon Scale grading within an impressive 2-point range—that’s the tightest accuracy you’ll find in any mobile coin scanner app.
But here’s what really sets CoinKnow apart as the best coin value app: its pricing accuracy. CoinKnow combines data from multiple authoritative sources including Heritage Auctions (HA), PCGS price guides, Stack’s Bowers, GreatCollections and recent eBay sales records. This multi-source approach gives you the most reliable market values available.
The app is one of only two worldwide that can automatically detect rare error coins like doubled dies and missing mint marks. It even identifies copper color classifications (RD/RB/BN) and Proof finishes (CAM/DCAM) that other coin identifier apps miss.
2. CoinValueChecker
Best For: Investment-focused collectors tracking market trends
CoinValueChecker is a powerhouse coin appraisal app that goes beyond simple identification. With 99% accuracy across 300,000+ U.S. coin types, this coin scanner app helps you understand not just what you have, but what it’s worth in today’s market.
Like CoinKnow, it’s one of the rare apps that automatically detects error coins—doubled dies, repunched mint marks, and missing mint marks are caught instantly. But the real magic happens with its market analysis tools.
3. Coinoscope
Best For: Collectors who want reliable worldwide coverage
With 1.7 million downloads and a 4.5-star rating, Coinoscope has proven its worth as a trusted coin identifier app. This coin scanner app uses AI image recognition to search through 300,000+ coins and 120,000+ banknotes from around the globe.
What makes Coinoscope unique is its visual comparison approach. Instead of giving you one result, it shows you a list of similar coins side-by-side, letting you make the final call. It’s like having a reference library in your pocket!
4. Maktun
Best For: International collectors who want zero ads and zero cost
Maktun is a hidden gem in the coin appraisal app world. With over 300,000 coins, 160,000 banknotes, and 15,000 tokens in its database, this coin value app covers the entire world—completely free with no advertisements!
The standout feature? Offline functionality. Take it to coin shows or use it anywhere without worrying about internet connection. Your collection syncs via cloud backup across all devices.
5. PCGS CoinFacts
Best For: Serious collectors who need authoritative reference data
PCGS CoinFacts isn’t your typical coin scanner app—it’s the industry standard encyclopedia from the most respected name in coin grading. This coin identifier app contains data on 39,000+ U.S. coins with professional-grade pricing and population statistics.
Here’s the key: you identify your coin first, then use CoinFacts to get comprehensive data across all grade levels. The pricing comes directly from PCGS auction records and market sales, not estimates.
6. Numiis
Best For: History enthusiasts and educational purposes
If you love the stories behind objects, Numiis is the coin appraisal app for you. Rather than just identifying coins and spitting out values, Numiis provides rich historical context about the era, political situation, and cultural significance of each coin’s design.
The database covers nearly 30,000 U.S. coins with detailed filtering by year, country, mint mark, and historical period. It’s perfect for understanding why certain coins matter historically.
7. Heritage Auctions
Best For: Understanding actual market prices
Heritage Auctions takes a completely different approach as a coin value app. Instead of estimated values, it shows you what coins actually sold for at auction. This is reality-based pricing—what collectors are willing to pay right now.
Search the extensive archives to find coins identical to yours and see the hammer prices. You can also browse upcoming auctions and place bids directly through the app.
8. CoinSnap
Best For: Beginners wanting quick, simple answers
CoinSnap lives up to its name—just snap a photo and get instant results! This coin identifier app offers one of the most intuitive experiences available, with 99% claimed accuracy across 240,000+ coin types.
The app identifies coins, distinguishes between Mint State and Proof specimens, provides automatic grading and market value estimates, and detects minting errors using AI. It’s perfect for everyday coin identification without complexity.
9. NGC App
Best For: Collectors who want to connect with others worldwide
The NGC (Numismatic Guaranty Company) app connects you with a global community of coin collectors. While it’s not primarily a coin scanner app, it offers certification verification, population statistics, set registry access, and networking opportunities.
The app helps you learn to spot fakes, find dealers specializing in specific coins, and understand values based on age, rarity, and condition. It’s social numismatics at its best!
Finance Writer
