Card Centering Calculator is the ultimate tool for measuring your card’s centering ratios for grading. Whether you’re working with Pokémon, One Piece, Lorcana, or sports cards like baseball, basketball, and football, the app provides real-time centering measurements (e.g., 55/45 or 60/40) and displays the highest potential grades from major grading companies, including PSA, BGS, SGC, CGC, TAG, and ACE. Wondering if your card has centering worthy of a perfect gem mint 10? Find out now!
Key Features
— Card Scanner With Auto Centering Detection
Scan or upload your card, and let AI automatically calculate its centering ratios.
— Precise Ratio Measurements
In addition to auto-detection, you can also manually place measurement guides on each side to achieve precise centering calculations. Use the zoom feature for ultra-accurate adjustments.
— Grade Comparisons
Instantly see the best possible grades from PSA, BGS, CGC, SGC, TAG, and ACE as you adjust centering ratios, helping you choose the grading company that will give your card the highest grade based on centering.
— Front & Back Side Grading
Measure centering for both the front and back of your card, as different grading standards often apply to each side.
— Grading Standards Reference
An all-in-one handbook for the official centering standards from PSA, BGS, CGC, SGC, TAG, and ACE.
— Advanced Settings & Customizations
Tailor auto-detection settings, grading preferences, colors, and more to suit your specific needs.
— Off-Center Visualization Guide
Select any centering ratio (e.g., 65/35 or 75/25) and view a visual representation of an off-centered card. This feature helps you quickly assess and exclude poorly centered cards without needing to scan each one.
— Compatible With All Cards
From TCG cards like Pokémon, One Piece, Yu-Gi-Oh!, Lorcana, and Magic: The Gathering to sports cards like baseball, basketball, and football, this app works with any card type you need to grade.
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Why Centering Matters
Centering plays a vital role in determining a card’s grade from professional grading companies. Even if a card is in mint condition, poor centering can drastically reduce its grade and value. With Card Centering Calculator, you can precisely measure centering ratios, ensuring you make informed decisions about submitting cards for professional grading.
Who Should Use Card Centering Calculator
1. Card Collectors: Ensure your trading or sports cards meet professional grading standards, preserving and potentially increasing their value.
2. Sellers & Traders: Verify centering to maximize the worth and appeal of your cards before selling or trading.
3. Buyers: Quickly assess centering on potential purchases to avoid investing in off-centered cards that might lower their grading potential.
Note: Card Centering Calculator focuses exclusively on measuring centering ratios. Keep in mind that professional grading companies like PSA, BGS, CGC, SGC, TAG, and ACE also evaluate other factors, including edge wear, surface scratches, dents, dings, and overall condition. This app does not assess these additional grading criteria.
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! 🙏🏻
Best App, Best Dev
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!
Great pre-grading tool
TacomaLynne
I was searching for a quick and accurate way to measure the centering of my Pokémon cards before submitting them to PSA, and this app has been perfect for that. It makes it much easier to distinguish between subtle differences like 55/45 and 60/40 centering. The developer has also been incredibly responsive to feedback and open to suggestions, which gives me confidence that the app will keep improving. Looking forward to future updates!
Developer Response
Thanks for your review TacomaLynne! I'm glad the app is helping with your Pokemon pre-grading. 🙂
Great app, please update centering standards
cpapp2
Paid for this app as I really appreciate the work that went into it. It works great - only critique would be to update the grading standards, as it seems to average the T/B and L/R centering, and can give a false reading of 10 (ie card can have 50/50 T/B but be outside of 55/45 on L/R; app would still say 10 despite grading scale not caring about the average, only if either centering measurement is outside 55/45)
Developer Response
Hey! The app doesn’t do any averaging! It reports the grade exactly as the standards specify. For most grading companies (including PSA), they consider the worst of L/R & T/B. There are a few rare exceptions to this (such as a BGS 9.5) where they consider both the L/R & T/B, not only the worst side. If you have any questions about this feel free to reach out to me through the app!
- Updates for iOS 26 and iPadOS 26!
- Bug fixes
- Improved accessibility features across the app
Version 1.11
The developer, Jade Lizard Software LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
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
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Larger Text
Dark Interface
Information
Seller
Jade Lizard Software LLC
Size
11.5 MB
Category
Utilities
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.