Card Centering Calculator

Card Centering Calculator

TCG & Sports Card Grading Tool

2.3K ratings
125 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • September 17, 2024
  • July 6, 2026

Features

Card Centering Calculator video #1 for iPhone
Card Centering Calculator screenshot #2 for iPhone
Card Centering Calculator screenshot #3 for iPhone
Card Centering Calculator screenshot #4 for iPhone
Card Centering Calculator screenshot #5 for iPhone
Card Centering Calculator screenshot #6 for iPhone
Card Centering Calculator screenshot #7 for iPhone
Card Centering Calculator screenshot #8 for iPhone
Card Centering Calculator screenshot #9 for iPhone
iphone
ipad
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About

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.

AI-powered card centering detection
Manual centering measurement with zoom
Grade comparisons for PSA, BGS, SGC, CGC, TAG, ACE
Front and back side centering measurement
Grading standards reference guide
Off-center visualization tool
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What users say

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What's New in Card Centering Calculator

2.0.1

July 6, 2026

- Added back the manual X, Y, and Z rotation sliders - Improved the Perspective Fix tool with a magnifying lens for more accurate marker placement on card corners Thank you everyone for your feedback on version 2.0!

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In-App Purchases

$4.99

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Permanently unlocks all premium features

User reviews

Works as intended

Honestly works well 👍

Accurate time saving tool

Do yourself a favor and get this tool. It’s a huge improvement over the physical centering tools and it’s the most valuable tool in my toolbox, including maybe my loupe. Are you really going to slide a piece of acrylic or plastic around on the surface of your cards trying to get the card centered up? You can have the card in a penny sleeve but those just make the card stick to the plastic. They’re also really hard to read and hard to use. While measuring the left side you’re constantly wondering if the right side is still lined up. With this tool, you don’t have those worries. The perspective fix feature works incredibly well too, but you’ll rarely need it because the leveling feature on the camera works great. I take my pictures about 8 inches from the card when The leveler gives me the green and I rarely need to fix the perspective, but I will use it anyway because of the zoom it gives me into my corners. I got this tool originally because the AI apps I was testing turned out to be really bad at judging centering, so this app hits the sweet spot of digital aid and DYI. There is a lot of variance in how the different grading companies will ding your cards for centering and it’s super helpful to see all of their probable scores in real time in one place. The dev is very responsive.
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Can’t log in

I got a new phone and decided to use a new Apple account for various reasons. It will not let me log into my account that I had things saved on and premium pass.
Besides that it is a great app with a great caused if I can log into my account .

Great app!

Been using it for a couple years now it’s absolutely goated

Update destroyed app

Card centering warp fixing not working anymore. Dragging the dots to each corner isn’t working

Developer apps

User experience

🐞

Reported Bugs

2 issues

Centering measurement resets during use

Bug

Image rotation doesn't stay in place

Bug

Requested Features

2 requests

Thinner and dashed centering lines for better visibility

Feature

Free access to grading information without subscription

Feature

FAQ

What does the Card Centering Calculator app do?

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.

What are the key features of this app?

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.

Is the Card Centering Calculator app free to use?

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.

What types of cards is this app compatible with?

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.

How does this app help with card grading?

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.