Skip to content

Track your coins.
Know their worth.

Self-hosted coin collection manager with real-time precious metal valuations, portfolio analytics, and Numista catalog integration.

Real-Time Metal Valuations

Automatic gold, silver, and platinum pricing updated every 5 minutes from live market data. See the exact melt value of every coin in your collection.

Numista Catalog Integration

Search the world’s largest coin catalog directly from Coffer. Auto-fill coin details, fetch images, and track collector market values.

Portfolio Analytics

Aggregate portfolio value with historical charts, metal composition breakdowns, and multiple timeframes from 1 hour to full history.

Self-Hosted & Private

Deploy with Docker in minutes. Your data stays on your hardware. No subscriptions, no tracking, no third-party dependencies.

Collection Import

Import your existing Numista collection with a single OAuth flow. Coins, images, and metadata are pulled automatically.

Detailed Coin Records

Store weight, purity, diameter, grade, mint mark, year, denomination, country, and more. Supports bullion, commemorative, and circulation coins.

Spring Boot 4KotlinAngular 18PostgreSQLDockerTailwind CSS