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Slabmint: TCG Card Grader

Centering & grade odds
Zubair Shah · Utilities
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App info

Developer
Zubair Shah
Category
Utilities, Reference
Released
Sep 29, 2026
Version
1.1 (Oct 12, 2026)
Price
Free
Size
3.5 MB
Requires
iOS 17.0
Age rating
4+
Languages
English

In-app purchases

Collector — Yearly$29.99
Slabmint Lifetime$59.99
Collector — Monthly$6.99
Current prices, App Store US.
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Release date

The release date was moved 1 time before launch.

About Slabmint: TCG Card Grader

Grading a single card costs anywhere from $17 to $80, and the wait runs for months. Most cards come back a 9. Slabmint measures the card on your iPhone first, so you only send the ones worth sending. MEASURED, NOT GUESSED Photograph the card. Slabmint finds the outline, flattens the perspective and locates the printed border, then reports how far off centre the card sits — left to right and top to bottom, to a tenth of a percent. If the border is hard to see, drag the four guides yourself; a magnifier follows your finger and the numbers update as you drag. WHITENING ON EVERY EDGE AND CORNER The back of a card is where grades are lost. Slabmint checks a thin band around the whole card for the light, desaturated pixels that mean whitening, scores each edge and corner, and paints what it found straight onto the image. SURFACE LENS Three ways to re-light the captured card: raking light for…
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