Scan with confidence
Review card identity, language, variant, condition, pricing, and grading guidance.
Trading-card operations, simplified
Know every card.
Run every sale.
TCG MarketOS helps collectors and dealers scan cards, manage inventory, understand prices, prepare listings, and follow fulfillment from one connected workspace.
Free desktop companion
Run your private MarketOS server.
Install TCG MarketOS Desktop on one Windows PC or Mac. That computer stores your live workspace and powers iPhone inventory, pricing, recognition, marketplace sync, notifications, and Drop Watch.
Windows 10/11Download Windows x64Beta portable ZIP · Version 5.0.9Apple-silicon MacDownload macOS DMGSigned and notarized by Apple · Version 5.0.9
The iPhone app can show its review demo without a computer. Live features require one paired desktop server running on a trusted private network or Tailscale.
Windows 5.0.9 is a beta ZIP and may show a SmartScreen warning because it is not code-signed. macOS 5.0.9 is signed, notarized, and stapled.
Manage the collection
Track quantities, storage locations, costs, values, duplicates, and want-list targets.
Operate the business
Prepare marketplace listings and follow sales, labels, fees, shipping, and exceptions.