A coin identifier app uses your phone's camera to match a coin against a catalogue, then shows its likely country, date range and details. The right one depends on whether you're sorting a jar of old change, building a US set or researching a valuable piece. Nine apps follow in no particular order, plus how to check what they tell you.
Old coins turn up everywhere: a tin in a grandparent's drawer, change from a trip abroad, a find in the garden. A photo app is the quickest way to work out what you're holding, and some are surprisingly good at it.
The nine apps below are listed alphabetically and in no particular order, from quick photo scanners to catalogues run by grading services and collector communities. Each description comes from the app's own store listing or website, re-checked this week. For more free tools I've looked at, browse my research and free tools.
Coin identifier apps compared
In the free plan column, Yes means the app's own listing or site describes free use or a free download, Trial only means a time-limited trial and No means neither is stated on the pages we read. Many scanners limit free scans and offer a premium upgrade.
| Tool | Type | Good for | Free plan |
|---|---|---|---|
| Coin ID | Photo coin identifier | Quick photo identification | Yes |
| CoinIn | Photo coin identifier | Scanning and sorting a collection | Yes |
| CoinScan | Photo coin identifier | Identifying and logging coins | Yes |
| CoinSnap | Photo coin identifier | World coins and details | Yes |
| IdentiCoin | Photo coin identifier | A newer scanner to try | Yes |
| MyCoins+ | Collection tracker | Tracking sets and missing dates | Yes |
| NGC | Grading service app | Checking graded coins | Yes |
| Numista | Coin catalogue | Looking up world coin types | Yes |
| PCGS CoinFacts | Coin encyclopedia | Researching US coins in depth | Yes |
Nine apps for identifying coins
Coin ID
Best for: Casual finders who want to snap a coin from a jar and see what it might be within seconds.
CoinIn
Best for: Collectors who want each scanned coin saved into a searchable collection they can sort later.
CoinScan
Best for: Hobbyists building a collection who want identification and a log of what they own in one app.
CoinSnap
Best for: Travellers and inheritors of mixed jars who want details on coins from many countries.
IdentiCoin
Best for: iPhone users who want a second opinion when another scanner gives a doubtful match.
MyCoins+
Best for: Set builders working through US series who want to see which dates and mint marks they still need.
NGC
Best for: Buyers who want to verify a coin certified by this grading company before they trust a listing.
Numista
Best for: Collectors who want a huge community catalogue of world coins plus members to swap duplicates with.
PCGS CoinFacts
Best for: Serious US collectors who want images, varieties and population data from a major grading service.
Why an app match is only a starting point
Coin designs change more often than people think. The Royal Mint says the familiar round one pound coin was replaced with an all new, 12-sided one pound coin in 2017, and mints around the world refresh designs, metals and edges in the same way.
What that means for you: two coins can look almost identical in a photo and still be different issues. Check the date, the edge, any mint mark and the wording around the rim before you trust a match, especially if the app suggests something rare.
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Scanner, catalogue or grading app?
Photo scanners are fastest for a quick guess and work best with a clear, well-lit picture of each side. Catalogues let you browse every known type for a country, which helps when the scanner isn't sure. Grading service apps are for checking coins that have already been certified, and for serious research on US issues.
Most collectors end up using one scanner for speed and one catalogue for checking, and that combination catches most mistakes.
Getting a good scan
- Wipe off loose dirt with a soft cloth, but never polish or clean the coin.
- Place it on a plain dark background in daylight.
- Photograph the front, then the back, filling the frame.
- Tilt slightly to catch lettering that's worn flat.
- Compare the app's match with the date and marks you can see.
- Save it to a collection so you can review it later.
Mistakes that lead to wrong matches
- Scanning in yellow indoor light. Colour casts confuse metal types.
- Only photographing one side. The back often carries the detail that settles it.
- Ignoring the mint mark. A tiny letter can change which issue you have.
- Taking the first result. Look at the second and third suggestions too.
Keeping a collection organised
Once you've identified a few dozen coins, a list matters more than the scanner. Note where each coin came from, its date, its condition in your own words and any marks you spotted. A simple record like that makes it far easier to spot gaps in a set, avoid buying duplicates and share your finds with other collectors.
Do you make a coin identifier app? Tool makers can ask to be considered for a featured place on this list.
My plain advice on coin identifier apps
Use a scanner to sort, not to decide. It's brilliant for turning a jar of mystery coins into a list of countries and dates, but any coin that might be special deserves a second check in a catalogue or with a grading service.
And never clean a coin to get a better scan. Collectors care about original surfaces, and scrubbing a coin can do more damage to its appeal than anything else you could do to it. If you enjoy the hunt, my blog has more guides to apps that make hobbies easier.
Frequently asked questions
What is the best app to identify coins?
It depends on your goal: a photo scanner for quick sorting, a catalogue for checking world coins, or a grading service app for certified US coins.
Are coin identifier apps free?
Most are free to download, with limits on scans or extra features in a premium upgrade. Catalogue sites often let you register for free.
How accurate are coin scanner apps?
They're good for common coins with a clear photo, but worn or similar-looking coins can be misread. Always check the date and marks yourself.
Should I clean old coins before scanning them?
No. Wipe away loose dirt gently, but polishing or cleaning can damage the surface collectors care about.
Can an app tell me if a coin is rare?
It can flag coins worth a closer look, but rarity depends on exact dates, varieties and condition, which need careful checking.
Why does the app show a different coin from mine?
Similar designs are common. Mints change designs and edges over time, as the Royal Mint's 12-sided one pound coin shows.
