Cardbase is a trading card collecting app designed to bring research, collection management, grading insights, and selling tools together in one place. Collectors can scan Pokémon and ONE PIECE cards, including graded cards and slabs, to identify a card’s version and grade, or search by name, set, and number. The app provides reference prices from supported markets, completed sales, price trends, and population data, with prices labelled by market.

Users can save cards, sealed products, and slabs in a collection, record purchases, sales, and trades, and track collection value alongside realized and unrealized profit or loss. Cardbase also offers centering measurements and raw-versus-graded price context to help collectors assess grading potential; these are estimates, not official grades. When ready to sell, users can create listings from items in their collection, set prices and delivery options, and manage offers and buyer conversations.

Cardbase has a free plan, and scanning can begin without an account. An account is needed to save a collection, create listings, and contact other collectors.