On Deck by MDC

A clean inventory app for trading card collectors and hobby sellers. Track raw cards, graded slabs, collections, pricing, QR workflows, and show prep from anywhere.

On Deck by MDC is an inventory and collection management app built for trading card collectors, hobby sellers, and small card businesses.

The app helps users organize raw cards, graded slabs, collections, show inventory, and pricing information in one clean mobile workflow.

Features include:

Raw card inventory tracking Graded slab inventory tracking Collection organization Card details, grading info, and certification tracking Pricing and market value tracking Fast search and filtering QR and barcode scanning workflows On Deck show prep tools Sold card and trade tracking Cloud-based account sync

On Deck by MDC is built for collectors who want a reliable way to manage inventory across devices, prep for card shows, and keep their collection organized without relying on spreadsheets.