Diffee VS Slabline

Slabline's answer:

Collectors who own graded cards (slabs) and want to know what their collection is really worth: from people with a handful of PSA 10s to serious collectors with hundreds of slabs. Also collectors deciding whether to grade raw cards, and anyone who wants their collection documented for insurance.

Slabline's answer:

Every value is tied to the real sales behind it. Slabline shows a card's price at every grade (PSA, BGS, SGC and CGC) along with the dated recorded sales it came from, so you can see why a card is worth what it's worth. Then it goes beyond a price tracker: it manages your whole collection like a portfolio, predicts a raw card's grade from a photo before you pay to grade it, and scores how well your collection is protected, with insurance-ready records.

Slabline's answer:

Most card apps give you one number. Slabline gives you the number, the sales behind it, and what to do next: which grader pays most for your card, whether grading a raw card is worth the fee, and whether your collection is properly insured. It covers sports cards and Pokémon/TCG across four grading companies, works on web, iPhone and Android, and you can start free without an account.

Slabline's answer:

Slabline is built by Hobby Smart Case, a company of collectors that makes protection gear for card collections. We kept hearing the same two questions: "what is my collection actually worth?" and "am I protected if something happens to it?" Slabline is the software answer to both: live values from real sales, and a single score for how well your collection is protected.

Slabline's answer:

• Computer vision — identifies a card from a phone photo by matching it against an image index of our 1.57M-card catalogue
• AI grading models — read centering, corners, edges and surface to predict a raw card's likely grade
• Sales data pipeline — ingests recorded sales from eBay and the major auction houses every night and re-prices each card by grade
• Web, iOS and Android apps — one TypeScript/React codebase across all three
• MCP server and ChatGPT app — so AI assistants can look up card values directly