Card Centering Calculator

Name: Card Centering Calculator
Rating: 4.7 (2299 reviews)
Author: Jade Lizard Software LLC

TCG & Sports Card Grading Tool

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

2.3K Ratings
Age Rating

4+
Years
Category

Utilities
Developer

Jade Lizard Software LLC
Language

EN
English
Size

18.6
MB

Card Centering Calculator is the ultimate tool for measuring your card's centering ratios before grading. Whether you collect Pokémon, One Piece, Lorcana, Yu-Gi-Oh!, Magic, baseball, basketball, football, or other trading and sports cards, the app helps you quickly measure centering, compare grading standards, and decide if your card may be worth submitting. Scan or upload a card image to calculate real-time centering ratios, such as 55/45 or 60/40, and instantly compare the highest potential centering grades from major grading companies including PSA, BGS, SGC, CGC, TAG, and ACE. Wondering if your card has centering worthy of a Gem Mint 10? Measure it before you submit. --- Card Scanner With Auto Centering Detection --- Scan or upload your card and let the app automatically detect the card edges and calculate centering ratios. --- Precise Ratio Measurements --- Manually adjust measurement guides on each side of the card for precise centering calculations. Use zoom for ultra-accurate adjustments and fine-tuning. --- Saved Cards --- Save cards to your collection and come back to them later. Add tags, filter your saved cards, and keep track of cards you may want to grade, sell, trade, or review again. --- Perspective Fix Tool --- Correct skewed, angled, bent, or warped card images before measuring. The Perspective Fix tool helps straighten card edges so you can get cleaner and more accurate centering measurements. --- Grade Comparisons --- Instantly see the best possible centering grades from PSA, BGS, CGC, SGC, TAG, and ACE as you adjust your card's ratios. Compare grading companies and see how each company's centering standards may affect your card. --- Front and Back Side Grading --- Measure centering for both the front and back of your card, since grading standards differ between sides. --- Grading Standards Reference --- View centering standards from PSA, BGS, CGC, SGC, TAG, and ACE in one convenient reference section. --- Cropping and Image Tools --- Crop card images, upload from your photo library, scan with the camera, or upload a card image from a URL. --- Compatible With All Cards --- Use Card Centering Calculator with TCG cards, sports cards, and other collectible cards, including Pokémon, One Piece, Yu-Gi-Oh!, Lorcana, Magic: The Gathering, baseball, basketball, football, and more. Why Centering Matters: Centering plays a major role in determining a card's grade from professional grading companies. Even if a card is otherwise in excellent condition, poor centering can reduce its grade and impact its value. Card Centering Calculator helps you measure centering ratios before submitting cards for grading, giving you more information when deciding which cards to grade, sell, trade, or keep raw. Note: Card Centering Calculator focuses on measuring centering ratios. Professional grading companies such as PSA, BGS, CGC, SGC, TAG, and ACE also evaluate other factors, including corners, edges, surface wear, scratches, dents, print quality, and overall condition. This app does not assess those additional grading criteria.

Ratings & Reviews

4.7

out of 5

2.3K Ratings

Accurate time saving tool
Jul 18
Don Tevenask
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.
Accurate time saving tool
Jul 18
Don Tevenask

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.
It works
Mar 29
Mikec0
I don’t usually leave reviews but I figured since I was weary about getting the app I’d help others that are too. It actually works! You have to be on point as possible if you want it to be accurate which this app allows you to do so which is great. I tested it on my charizard sir before I sent it to psa the card was clean and the app said it would be a psa 10. The app was in fact correct it came back a 10! I test it constantly on cards I have that are already graded and it has never been off. With that being said I highly recommend!

Developer Response
Thanks so much for your review! I'm glad you've found the app helpful. Good luck with your future submissions!
It works
Mar 29
Mikec0

I don’t usually leave reviews but I figured since I was weary about getting the app I’d help others that are too. It actually works! You have to be on point as possible if you want it to be accurate which this app allows you to do so which is great. I tested it on my charizard sir before I sent it to psa the card was clean and the app said it would be a psa 10. The app was in fact correct it came back a 10! I test it constantly on cards I have that are already graded and it has never been off. With that being said I highly recommend!
Developer Response Apr 15
Thanks so much for your review! I'm glad you've found the app helpful. Good luck with your future submissions!
Love it
04/01/2025
hhr2009
But how do you purchase the premium version I don’t see the option in the app only tip jar option. If u could direct me on how to obtain the premium I would love to purchase it thank youUPDATE: after having paid the $4 (worth every cent) it’s perfect for guessing ur centering of the card,would highly suggest getting platform to take 0degree tilt perfect flat pictures to make sure ur centering is good. Otherwise it’s the best app in the market for centering in 20days I’ll comeback to update since I did use this app to get the centering on a Moonbreon which is in grading at the moment.

Developer Response
Hey hhr2009! You can purchase premium on the "more" tab. Feel free to reach out to me through the app if you need any additional assistance! Thanks! 🙏🏻
Love it
04/01/2025
hhr2009

But how do you purchase the premium version I don’t see the option in the app only tip jar option. If u could direct me on how to obtain the premium I would love to purchase it thank youUPDATE: after having paid the $4 (worth every cent) it’s perfect for guessing ur centering of the card,would highly suggest getting platform to take 0degree tilt perfect flat pictures to make sure ur centering is good. Otherwise it’s the best app in the market for centering in 20days I’ll comeback to update since I did use this app to get the centering on a Moonbreon which is in grading at the moment.
Developer Response 01/10/2025
Hey hhr2009! You can purchase premium on the "more" tab. Feel free to reach out to me through the app if you need any additional assistance! Thanks! 🙏🏻
Best App, Best Dev
01/07/2025
Witecastle
The app is great. It’s simple, intuitive and very powerful. Paying for pro is worth it in my opinion. It has all the big time graders and it automatically updates the possible grade as you’re checking the centering. Even if you stick with the free version it’s really helpful and has a section for grading methodology. The dev is very responsive and quick with updates. One of the best app experiences I’ve had on iOS hands down. Will be recommending this app to all my fellow collectors.

Developer Response
Thanks Witecastle! I really appreciate your review!
Best App, Best Dev
01/07/2025
Witecastle

The app is great. It’s simple, intuitive and very powerful. Paying for pro is worth it in my opinion. It has all the big time graders and it automatically updates the possible grade as you’re checking the centering. Even if you stick with the free version it’s really helpful and has a section for grading methodology. The dev is very responsive and quick with updates. One of the best app experiences I’ve had on iOS hands down. Will be recommending this app to all my fellow collectors.
Developer Response 01/10/2025
Thanks Witecastle! I really appreciate your review!

- 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!

Version 2.0.1 Jul 6

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You

The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Supported Features
- VoiceOver
- Larger Text
- Dark Interface

Information

Seller: Jade Lizard Software LLC
Size: 18.6 MB
Category: Utilities
Compatibility: Requires iOS 18.0 or later.

iPhone
Requires iOS 18.0 or later.

iPad
Requires iPadOS 18.0 or later.

Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.

Apple Vision
Requires visionOS 2.0 or later.
Languages: English
Age Rating: 4+

4+

Learn More

Contains
Advertising
In-App Purchases: Yes

Unlock Premium $4.99

Large Tip $4.99

Small Tip $0.99

Pristine Tip $9.99

Medium Tip $1.99

Learn More