CardFlow combines a professional portfolio tracker, double-entry accounting ledger, and real-time analytics into one platform built specifically for serious card dealers.
Built from the ground up for collectors who treat the hobby like a business — not a spreadsheet.
Real-time P&L, pipeline breakdown, top performers, ROI tracking, and capital deployment — all calculated automatically from your transactions.
Track every card from purchase to sale in kanban and list views. See cost basis, CL value, grade, profit, and ROI at a glance.
Double-entry accounting designed for card dealers. Log purchases, PSA submissions, grade returns, sales, and expenses — auto-journal entries included.
Every card is tracked from first purchase through grading to final sale. Full transaction history with cost basis, hold time, and profit on every card.
Auto-generated P&L with revenue, COGS, gross profit, operating expenses, and net profit. Everything you need to hand to your accountant.
Your data syncs automatically across all your devices. Add a card on your phone, see it on your desktop. Always up to date.
Every card tells a story. CardFlow tracks every chapter.
Add a new entry in the Business Ledger — select "Bought Raw Card", enter the price and where you bought it. The card lands in your portfolio automatically.
When you ship to PSA, log "Sent to PSA" and link it to the card. The grading fee gets added to your cost basis and the card moves to In Grading.
When your grade comes back, log "PSA Grade Returned". Enter the grade received and the card moves to your For Sale inventory automatically.
Log "Sold a Card" and enter the sale price. Slab Lab calculates your profit, ROI, and updates your P&L — all the way back to the original purchase.
Join serious card dealers using Slab Lab to track inventory, manage accounting, and understand their business.