Tools & Apps

Centering calculators, apps, overlays and calipers: what works, how accurate they are, and how to use them.

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Sleeved trading cards beside a notebook and pencil on a pale desk

Tools & AppsSep 16, 2026September 16, 202612 min read

Do Card Centering Apps and Tools Actually Work? Accuracy Explained

Do card centering apps work? Honest accuracy of apps, overlays, calipers and scanners, where the errors come from, and how to shoot a photo that measures true.

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