# Card Centering Calculator — TCG & Sports Card Grading Tool > Tool for measuring card centering ratios for grading and estimating potential grades. (iPhone/iPad app by Jade Lizard Software LLC.) - Source: https://appshunter.io/ios/app/card-centering-calculator/id6661022837 (this page in markdown: same URL + `.md`) - Developer: [Jade Lizard Software LLC](https://appshunter.io/developer/528029155) - Category: Utilities, Reference - Price: Free with in-app purchases - Rating: 4.70/5 from 2,310 App Store ratings · 128 written reviews indexed - Age rating: +4 - Requires: iOS 18.0 · 18 MB - Languages: American English - Released: 2024-09-17 - Data updated: 2026-08-24 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/card-centering-calculator/id6661022837/reviews.md ## What is Card Centering Calculator? 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. ## Key features - 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 ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Unlock Premium | $4.99 | one-time | | Medium Tip | $1.99 | one-time | | Small Tip | $0.99 | one-time | | Large Tip | $4.99 | one-time | | Pristine Tip | $9.99 | one-time | ## What do users think of Card Centering Calculator? Overall sentiment: positive **Pros** - 👍 Intuitive and flexible - 🚀 Provides great information on centering - 💡 Helpful for graders and collectors - 👍 Easy to use and user-friendly - 👍 Accurate and works as a physical tool **Cons** - 🐛 Centering measurement doesn't work properly - 🔒 Grading information locked behind paywall - 🐛 Camera quality issues, app resets during use **Commonly reported bugs** - Centering measurement resets during use - Image rotation doesn't stay in place **Most requested features** - Thinner and dashed centering lines for better visibility - Free access to grading information without subscription ## Recent user reviews (10 of 128) All indexed reviews: https://appshunter.io/ios/app/card-centering-calculator/id6661022837/reviews.md ### 5/5 — Perfect *2026-08-21, version 2.0.1* Excellent app to review centering of cards before buying them ### 5/5 — Amazing *2026-08-17, version 2.0.1* This app is great the premium version is a one time payment and helps so much. The tools in the app helps me decide what I want to send in for grading. ### 5/5 — Works as intended *2026-07-27, version 2.0.1* Honestly works well 👍 ### 5/5 — Accurate time saving tool *2026-07-18, version 2.0.1* 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. ### 4/5 — Can’t log in *2026-07-10, version 2.0.1* 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 . ### 5/5 — Great app! *2026-07-08, version 2.0.1* Been using it for a couple years now it’s absolutely goated ### 1/5 — Update destroyed app *2026-07-06, version 2.0* Card centering warp fixing not working anymore. Dragging the dots to each corner isn’t working ### 4/5 — Ok but *2026-07-06, version 2.0* This app doesn’t really grade your card so I would if it would put what it thinks the card is graded ### 2/5 — have to pay *2026-07-05, version 2.0* I was looking for a free grading app and i stumble across this app and with this app you have to pay. ### 1/5 — Gutted the entire app *2026-07-04, version 2.0* This app used to be wonderful. You could easily switch the rotation of the card and perspective of it right at the bottom of the screen. Now I have to click an entire different screen. Click some circles and hope that AI generates a good perspective for me to lineup it’s terrible. I used to be able to line it up perfectly now I can’t why would you do this to your app? If it isn’t broke, don’t fix it I’ve never wanted a refund for an application on the App Store so bad before! Insert the Homelander meme “it was perfect”. It’s so applicable to this. ## Frequently asked questions about Card Centering Calculator ### 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. ## Version history (last 5 releases) ### 2.0.1 — 2026-07-06 - 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! ### 2.0 — 2026-06-28 This update adds a brand-new Saved Cards tab, making it easy to save cards and come back to them later. Scanner improvements: - Macro lens support for compatible devices - New Manual Mode for cards that are difficult to scan - Auto capture when a card is detected and level - Improved focusing, including tap to focus Centering Calculator improvements: - More precise centering lines with smaller adjustments and micro-pixel movement - New Perspective Fix tool for bent, warped, or skewed card images - New cropping tool - Upload card images from a URL This update also includes new customization settings, general improvements, a better experience on iPad and Mac, and several bug fixes. Thank you for your continued support and feedback. Good luck with your submissions! ### 1.11 — 2025-09-21 - Updates for iOS 26 and iPadOS 26! - Bug fixes - Improved accessibility features across the app ### 1.10.1 — 2025-08-01 Under-the-hood updates and improvements to ensure the best experience across all devices. ### 1.10 — 2025-06-26 • ACE is now a supported grading company • You can zoom in up to 15× for even more precise alignment • Added new 3D rotation sliders for the X, Y, and Z axes • Scanned images are now auto-enhanced (fine-tune sharpening in Advanced Settings) • Various small bug fixes and improvements Thanks as always for your support and suggestions — keep them coming, and good luck grading! ## Apps similar to Card Centering Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Pokémon HOME](https://appshunter.io/ios/app/pokemon-home/id1485352913) | 3.8 (15,645) | Free | Utilities | | [Pocket Dex – for Pokémon TCG](https://appshunter.io/ios/app/pocket-dex-for-pokemon-tcg/id6475128883) | 4.5 (137) | Free | Utilities | | [Instant Card Grading](https://appshunter.io/ios/app/instant-card-grading/id6469464438) | 3.5 (19) | Free | Utilities | | [Card Grader Pro](https://appshunter.io/ios/app/card-grader-pro/id6743489803) | 4.7 (4,384) | Free | Utilities | | [Card Grading AI](https://appshunter.io/ios/app/card-grading-ai/id6752859834) | 4.8 (516) | Free | Utilities | | [Binder AI: Card Grading Tool](https://appshunter.io/ios/app/binder-ai-card-grading-tool/id6744124434) | 4.6 (529) | Free | Utilities | ## More apps by Jade Lizard Software LLC - [Work Recorder](https://appshunter.io/ios/app/work-recorder/id657227825) - [Pitch Counter & Radar Gun](https://appshunter.io/ios/app/pitch-counter-and-radar-gun/id797882749) - [Black Holes Shooter - Strategic Space Shooter](https://appshunter.io/ios/app/black-holes-shooter-strategic-space-shooter/id932993267) - [Double Tap - A Simple Game of Coordination](https://appshunter.io/ios/app/double-tap-a-simple-game-of-coordination/id1050800922) - [Circle Tap - A Game of Timing](https://appshunter.io/ios/app/circle-tap-a-game-of-timing/id1056497923) - [iMassage U Vibrating Massager](https://appshunter.io/ios/app/imassage-u-vibrating-massager/id1064850875) All apps by Jade Lizard Software LLC: https://appshunter.io/developer/528029155 ## Related topics [card centering calculator](https://appshunter.io/ios/topics/card-centering-calculator) · [card centering](https://appshunter.io/ios/topics/card-centering) · [card centering tool](https://appshunter.io/ios/topics/card-centering-tool) · [card centering calculator app](https://appshunter.io/ios/topics/card-centering-calculator-app) · [trading card centering](https://appshunter.io/ios/topics/trading-card-centering) · [tcg card centering](https://appshunter.io/ios/topics/tcg-card-centering) · [pokemon card centering](https://appshunter.io/ios/topics/pokemon-card-centering) · [card calculator](https://appshunter.io/ios/topics/card-calculator) · [grading tool](https://appshunter.io/ios/topics/grading-tool) · [psa grading](https://appshunter.io/ios/topics/psa-grading) · [grading calculator for pokemon](https://appshunter.io/ios/topics/grading-calculator-for-pokemon) · [card grading tool](https://appshunter.io/ios/topics/card-grading-tool) · [card grading tool tcg](https://appshunter.io/ios/topics/card-grading-tool-tcg) · [card calculator app](https://appshunter.io/ios/topics/card-calculator-app) · [card grade checker](https://appshunter.io/ios/topics/card-grade-checker) · [sports card centering](https://appshunter.io/ios/topics/sports-card-centering) · [centering50](https://appshunter.io/ios/topics/centering50) · [slabsavvy](https://appshunter.io/ios/topics/slabsavvy) · [psa card scanner](https://appshunter.io/ios/topics/psa-card-scanner) · [card grader pro app](https://appshunter.io/ios/topics/card-grader-pro-app) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*