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Coin collecting

A coin collection app that starts with a photo of the tray

Lay the coins out and photograph them. AI drafts an entry for each coin it sees, with its own cropped photo — then you add what the photo cannot say: denomination, year, mint mark, the grade you would call it, and what it is worth to you.

Twelve varied collectible coins arranged in an archival tray on a dark worktable.

What you get

Three things a coin catalogue has to do

Photograph a tray at a time

Lay them out, obverse up, and shoot. AI drafts an entry per coin with its own cropped photo; you confirm each one. Photograph the reverse too and keep both faces on the same entry.

Record what a collector records

Denomination, year, mint mark, grade, provenance, what you paid — every entry carries a free-form description, tags, and a value, written the way you would write them. Search by tag to pull one country or one denomination back out.

Know what the collection is worth

Put a value on each coin. Export an itemised PDF report with totals, or a spreadsheet, when insurance documentation, a valuation, or a sale needs the figures.

How it works

From a tray of coins to a catalogued collection

  1. The Keeper of Things capture sheet: catalogue a space, choose from gallery, or add manually.
    Step 01

    Lay the coins out and photograph them — a tray or an album page at a time.

  2. The Keeper of Things review screen showing items the AI detected in a photo, ready to accept.
    Step 02

    AI drafts an entry per coin it sees, each with a cropped photo. You confirm.

  3. The Keeper of Things inventory catalogue listing items with photos, locations, and categories.
    Step 03

    Every coin becomes a searchable record carrying your denomination, year, and grade notes.

  4. The Keeper of Things inventory grouped by category, showing Electronics and Furniture groups.
    Step 04

    Albums in the study, tubes in the safe — the collection still reads as one list.

Where to start

Free for the first 75 coins, Plus for the collection

US$4.99/mo · US$49.99/yr

Start free with 75 items across 8 locations — enough to catalogue your best trays properly. Plus covers a serious collection: 1,000 coins across 50 locations, with the itemised PDF report. And when a lifetime of collecting outgrows counting, Pro (US$9.99/mo · US$99.99/yr) removes the item and location limits entirely.

Use it in your browser today · Android on Google Play

FAQ

Cataloguing coins, answered

Still curious? Reach us at [email protected] .

How do I record both sides of a coin?

An item holds multiple photos, so photograph the obverse, then the reverse, and keep both on the same entry — a slab label or an edge shot makes a good third. There is no special two-sided flow; it is simply an item with as many photos as the coin needs.

Does it identify or grade my coins?

No. The AI describes what it can see in the photo and drafts a name and description — it does not attribute a coin or assign a grade. You record the denomination, year, mint mark, and the grade you would call it, and correct anything the draft got wrong. You know the coins; the app keeps the record.

Can I record what each coin is worth?

Yes. Give any coin a value — what you paid, a dealer’s offer, the figure you would insure it for. The itemised PDF totals those values and can carry the primary photos; the spreadsheet export carries the figures too.

Who can see my collection?

Only you, unless you invite someone. The catalogue is tied to your account, encrypted in transit and at rest, never sold, and never used for advertising. On Family you choose exactly who joins.

Get the collection out of the tubes and onto the record