Sample collection, yours to try. Runs offline, nothing you type leaves your device. Buy your own copy, $15 Back to PlainsMadeCo

My Coin Collection

Your collection, valued using the prices you enter

Add a coin

OFF
Leave "Value each" blank and silver coins will be valued at melt automatically.

Every coin

Tap any coin to change it

Break-even

What spot has to reach Every dollar you spent on coins with metal in them, divided by every fine ounce of that metal you hold. Green means spot is above your cost today. Coins with no metal content are left out, because there is nothing to measure them against.

Allocation

Ask about your collection

offline

Add to want list

Still hunting

Log a sale

→
Pick a coin to see your realized gainSelling removes it from the collection automatically, so nothing gets double counted.

Sales history

Exports are CSV files. Open them in Excel or paste straight into the desktop tracker. A backup file is different: it holds the collection, the sales, the want list, the lots and your spot prices, and restores all of it exactly. Worth saving one somewhere safe now and then, because this app keeps your collection in this browser rather than on a server.

Edit coin

A lot is one lump sum that covers several coins. Start one here, then add every other coin from the same buy to it. The Purchase lots panel on the Collection tab lets you split the total across them, evenly or by hand.

Import collection

Adding keeps what you already logged. Replacing wipes it first, so use that when you are moving from an older version and starting clean.

Where your collection lives

Your collection is saved in this browser, on this device. Nothing is uploaded, no account, no server, and nobody else can see what you own. That is on purpose.

The trade is that there is no copy anywhere else. Three things can lose it:

Moving or re-downloading this file. The storage is tied to where the file sits, so opening "My Coin Collection (2).html" gives you an empty collection while the old one sits where you left it.

Clearing your browsing data.

On an iPhone, Safari clears storage for a file you have not opened in about a week.

So: keep this file in one place and open it from there, and save a backup file now and then. A backup restores everything exactly - coins, sales, want list, lots, spot prices. This app will remind you when you are due.

Help

Settings

Metals in the header

Which spot prices you want at the top. Most US collections only ever need silver and gold, so the other two are off by default. Turning one off does not change a single coin.

Text size

Resizes everything in the app at once. Your device's own text size setting still applies on top of this.

Your coins, backups and CSV exports are unaffected.

Colours

Changes how the app looks. Nothing about your collection changes.