3 FREE SCANS — No Credit Card Required

Scan Your Change. You Might Be Holding Money.

Most valuable coins look completely normal. Upload a photo of any coin or bill and find out what it's really worth — in seconds.

Start Scanning

Check your coins before you spend them • 170+ countries

How It Works

Three steps to check if your coins are worth more

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Snap a Photo

Take a clear photo of your coin or bill directly in the app, or upload from your gallery.

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AI Checks It

Our AI checks your coin against thousands of known valuable patterns in seconds.

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Know Its Value

See if your coin could be worth more, with estimated value and what to do next.

See It In Action

Take a photo and see what your coin could be worth

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Your Coin Photo

Snap both sides for best results

AI RESULT

Doubled Die Obverse

92% Confidence

Clear doubling detected on date and "IN GOD WE TRUST" lettering. Consistent with known DDO variety.

Rarity
Scarce

Est. Value
$150 – $300

Grade
MS-63

Worth Professional Grading

Try It Free — Scan Your Coin

What We Check For

Our AI checks for 30+ patterns that make coins worth more

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Doubled Die

Double-struck letters or dates

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Off-Center Strike

Design shifted off the coin

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Die Cracks & Cuds

Raised lines or edge bumps

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Wrong Planchet

Coin struck on wrong metal

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Rotated Die

Front and back don't line up

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Clipped Planchet

Part of the edge is missing

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Miscut Notes

Bills cut in the wrong place

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Offset Printing

Print shifted on the bill

Industry First

The Only Coin Scanner with
Built-In Weight Verification

When our AI detects a potential wrong planchet or transitional error, we surface a Weight Verification Tool right inside your results — compare against official mint specs, test metal density, and get authentication guidance.

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Weight Check

Compare against official mint tolerances

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Metal Density

Specific gravity analysis for composition

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Auth Guidance

PCGS/NGC recommendation included

Try It Free

Simple, Affordable Pricing

Start with 3 free scans. Upgrade when you're ready.

Day Pass

$0.99

24-hour access

Unlimited scans for 24h
All error types
Value estimates

Get Started

Monthly

$9.99

per month

Unlimited scans
Live camera scanning
PDF reports
Priority AI analysis

Lifetime

$49.99

one-time payment

Everything in Monthly
Never pay again
All future updates
Founding member badge

Buy Lifetime

What Hunters Are Saying

Collectors around the world trust ErrorHunter

"I've been collecting UK Sovereigns for twenty years. ErrorHunt's live scan found a double-die strike in seconds that I would have missed with a loupe."

Alistair W.

London, UK

"Used the $0.99 daily plan on a stack of older Pesos. Found three clipped planchet errors I would have missed. This site paid for itself in one day."

Mateo R.

Mexico City, MX

"Finally, a site for global currency. Most tools only care about US quarters. ErrorHunt actually recognizes my Japanese Yen errors. A game changer."

Hiroshi T.

Tokyo, JP

"I'm a coin roll hunter and this saves me hours. Instead of examining every coin by hand, I snap photos and let the AI work. Found a 1972 DDO penny worth $500+."

Jason M.

Dallas, USA

"Ran a batch of Canadian Toonies through the scanner and it flagged a minor rotation error that three other experts missed. Best error detection site, hands down."

Sarah K.

Toronto, CA

"Real-time results are legit. I deal in high-volume trade and speed is everything. ErrorHunt gives me instant error detection so I can buy with confidence at auctions."

Marcus S.

Sydney, AU

Frequently Asked Questions

Everything you need to know before your first scan

How accurate is the AI detection?

Our AI uses multiple detection engines to check your coin against thousands of known valuable patterns. It's fast, accurate, and catches things the human eye can miss.

What types of coins and currency can I scan?

ErrorHunter works with coins and paper currency from 170+ countries, including US, UK, Canadian, Australian, Japanese, Mexican, Euro, and many more. Our dataset covers both modern and historical coinage.

Do I really get 3 free scans?

Yes. Every new user gets 3 completely free scans with full AI analysis and value estimates. No credit card required. After your free scans, you can keep checking coins starting at just $0.99.

What's included in the value estimates?

Each scan tells you if your coin could be worth more, with an estimated value range, a confidence score, and what to do next. Premium members also get downloadable PDF reports.

Can I use this on my phone?

Absolutely. ErrorHunter works in any modern web browser on phones, tablets, and desktops. You can also install it as a Progressive Web App for offline access. Premium members get access to Live Scan with real-time camera detection.

Is the Lifetime plan really one-time?

Yes. The $49.99 Lifetime plan is a single payment that gives you permanent access to all current and future features. No recurring charges, no hidden fees. It's the best deal if you check coins regularly.