This app helps collectors and traders measure card centering ratios for grading. It uses AI to detect centering or allows manual adjustments for precise measurements, displaying potential grades from major companies.
Summarized from real user reviews of Card Centering Calculator. Based on 2.5K reviews and a 4.7/5 average, it highlights the 5 positives and 3 negatives reviewers mention most about this Utilities app.
2.1
October 7, 2026
• New: E-Reader card mode. Measure your Pokémon e-Reader cards using the top and right sides • New (Premium): Show border widths in pixels, millimeters or inches instead of percentages • iOS 27 support • Bug fixes and improvements
More$4.99
Unlock Premium
Permanently unlocks all premium features
2 issues
Centering measurement resets during use
Image rotation doesn't stay in place
2 requests
Thinner and dashed centering lines for better visibility
Free access to grading information without subscription
The app is designed to help users measure the centering ratios of their trading cards and sports cards. It uses AI for automatic detection or allows manual adjustments to calculate precise centering measurements, which are crucial for professional grading.
Key features include AI-powered auto-centering detection, manual measurement with zoom for precision, grade comparisons from major grading companies (PSA, BGS, SGC, CGC, TAG, ACE), measurement of both front and back sides, a reference guide for grading standards, and a visualization tool for off-center cards.
The app is free to download and use, but it offers in-app purchases. This means certain advanced features or functionalities might require a purchase to unlock.
The app is compatible with a wide range of cards, including TCGs like Pokémon, One Piece, Yu-Gi-Oh!, Lorcana, and Magic: The Gathering, as well as sports cards such as baseball, basketball, and football.
By accurately measuring centering ratios, the app helps users understand how their card's centering might affect its grade from professional services. It displays potential grades from companies like PSA and BGS, allowing users to make informed decisions about which cards to submit for grading.
