On Deck by MDC vs ShadowTag

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.

Your prices, on real stickers, from the phone in your pocket. ShadowTag turns your trading-card inventory into professional price labels—without rebuilding your collection or surrendering control of your prices. Import your file, choose your pricing rules, customize your label, and print an entire show from your iPhone. YOUR PRICES. YOUR RULES. • Your imported price is the price. ShadowTag does not second-guess it. • Pin any price so it stays exactly where you set it. • Build pricing bands for different value ranges. • Round to clean dollars, odd-dollar prices, even-dollar prices, or add your own bump. PRINT WITH CONFIDENCE • Select individual cards or print a full batch. • Quantities create the correct number of physical labels. • Pause and resume printing without losing your place. • Follow real sticker progress in the app and Dynamic Island. • Interrupted labels remain queued instead of being silently marked as printed. • Print through compatible Bluetooth thermal label printers. MAKE EVERY LABEL YOURS • Add the card name, your own text, logo, and QR code. • Preview the finished label before printing. • Keep a consistent, professional look across your entire booth. KNOW WHAT NEEDS PRINTING ShadowTag remembers your labels and separates new, changed, and previously printed cards, so you can update stale prices without reprinting everything. BRING YOUR INVENTORY WITH YOU Import compatible files from Collectr, Shiny, TCGplayer, and common spreadsheet formats. ShadowTag handles singles, graded cards, sealed products, quantities, and individual copies. SHADOWSNAP + SHADOWTAG Send scanned cards directly from ShadowSnap into ShadowTag, ready to price and print. Scan it. Price it. Print it. PRIVATE BY DESIGN Your inventory stays on your device. ShadowTag does not require an account and does not collect your personal data. Third-party product names are trademarks of their respective owners. ShadowTag is not affiliated with or endorsed by Collectr, Shiny, or TCGplayer.