A coin album for your phone, with room for a photo of every coin you own.
The first screen is your shelf: fifteen sets grouped by denomination, each showing how far along you are. Tap one to open its album, where every date and mint mark has its own slot.
If you know what you're looking for, use the search field at the bottom instead. Every word has to match, so 1909 s vdb finds exactly one coin and delaware d finds the Denver Delaware quarter.
Tap a slot to open the coin, then tap Add to collection. The slot fills in and the album's progress bar moves. Tapping Remove from collection undoes it.
On a coin you own you can set the condition, what it's worth in your own judgement, when you got it, and a note. All of it is optional. Condition includes Not sure on purpose — most people holding a jar of wheat cents genuinely don't know, and being made to guess would put a number in your records that you never actually claimed.
Open a coin you own and tap Add a photo. You can take one with the camera or pick one from your library. Line the coin up inside the circle — drag to move it, pinch to zoom — and tap Use Photo.
If the photo is already square, it fills the circle exactly and there is nothing to drag until you zoom in. That is deliberate: the app will not let you frame a crop with empty space in it.
Each coin holds two photos, obverse and reverse. Tap the coin at the top of its detail screen to flip it over, then add a photo to that side. The album shows the obverse.
The same button reads Replace front or Replace back once a photo exists, and the bin beside it deletes just that face.
On your device, alongside the collection. If you turn on iCloud sync they are also copied to your own iCloud account. They are never uploaded anywhere else, and they are never included when you share your collection with someone.
Removing a coin from your collection leaves its photo on disk, so adding the coin back brings the picture with it. Removals are usually corrections, and a photo you took of a coin in your hand is harder to replace than a checkbox.
Open the … menu on the collection screen and choose iCloud sync. Switching it on copies your collection and your photos to your own iCloud account, so they survive a lost phone and appear on your other devices.
The screen shows when the last sync succeeded. If it says iCloud unavailable, the device is not signed in to iCloud or iCloud Drive is switched off for it — everything still works, the collection just stays on this phone.
Sync mirrors what is on your devices, including a coin you delete. It is not a substitute for a backup. If you want a copy that cannot be changed later, export one.
Each coin is merged separately and the newer edit wins, so working on a phone and an iPad without a sync in between does not lose either side's coins. Deleting a coin on one device sticks; adding it back on another afterwards also sticks.
Export backup in the … menu writes a single file containing your whole collection — every coin, condition, value, date and note. Keep it wherever you like. Restore from backup reads one back.
Restoring replaces your current collection with the contents of the file, and counts as an edit made now, so it wins any sync that follows.
Friends in the … menu. Put in a name for yourself, tap Share my collection, and send the file however you like. Someone who sends you one back appears in your friends list, and tapping them shows the two collections side by side: what they have that you don't, set by set.
A shared collection lists only which coins you own. Never what they are worth, never your notes, never your photos, never their condition or when you got them. A grade is a proxy for a price, so it is left out with the rest.
Snapshots are frozen at the moment they were made, and the date is shown — a comparison against a file from March is a comparison against March.
Every coin shows how many were struck. Where a coin is marked Mintage pending, the Mint has not yet published a final figure for that year. The app says so rather than guessing: a 2026 running total is not a mintage, and treating one as final would make ordinary current-year coins look like the scarcest things in the album.
Key, semi-key, scarce and common are worked out from the mintages within each set, not asserted. The bands differ by set, because a low mintage for a Morgan dollar is a very different number from a low mintage for a Roosevelt dime.
CoinCache does not tell you what your coins are worth, and does not look prices up. A coin's value depends far more on its grade than on its date, so a figure the app invented would be wrong for nearly every coin in a collection. Every value you see is one you typed in yourself, with the date you decided it — because figures go stale, and a number with no date on it invites you to trust something you worked out three years ago.
There is also no photo recognition and no grading. The app will not identify a coin from a picture or tell you what condition it is in.
The catalog covers fifteen U.S. sets — cents, nickels, dimes, quarters, half dollars, dollars and gold eagles — from 1878 to 2026. Older type coins, commemoratives, errors and world coins are not in it yet. If a set you collect is missing, say so in a report; it is the most useful thing to tell me.
Check that iCloud sync is switched on and signed in on both devices, then open the iCloud screen and tap Sync now. Photos copy one at a time and a large collection over a slow connection can take a while.
Mintages come from published Mint figures. If one looks wrong, report it with the coin's year and mint mark and where you have seen a different figure, and I will check it against the source.
Useful things to include:
Get in touch: Open an issue on GitHub
Reports are tracked publicly on GitHub, so you can see what's already been reported and follow a fix. A free GitHub account is needed to post one. Please don't include anything private in a report — and don't attach a backup file, since it contains your whole collection.