About Cardr Sports

Cardr Sports is a sports card portfolio tracking and analytics platform built for collectors who want to understand the true value of their collections. The app lets you catalog your slabs — tracking player, year, set, grade, and purchase price — and automatically estimates current market value using real public sales data and player-specific market trend multipliers.

Free users can track up to 10 cards and monitor cost basis, equity, and unrealized gains. Premium users unlock unlimited tracking plus the Oracle Engine, a predictive analytics tool that projects portfolio value forward 12 months and overlays player performance against market price. The platform also includes a market lookup assistant for on-demand card valuations, a scout agent that matches upcoming auction sales to your collection interests, and an admin-managed market pulse with trend multipliers and public sales data.

Cardr Sports is designed for everyone from casual hobbyists building their first set to serious investors managing large portfolios. Whether you're tracking a few childhood favorites or analyzing a diversified slab portfolio, Cardr gives you the tools to make informed decisions based on real market data rather than guesswork.

Cardr Sports is built on the Base44 platform, combining a clean glassmorphism interface with a powerful backend-as-a-service architecture. The app ships as a responsive web application with native-like mobile deployment, bottom tab navigation, and both light and dark mode support for a premium collecting experience.