Comparison

Instant Card Grading vs Card Centering Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Instant Card Grading

Analyze the centering of your trading cards instantly and accurately. This tool provides professional-quality pre-grading analysis to help you decide which cards to submit for official grading, saving you time and money.

Highlights
  • Instant centering analysis
  • Free pre-grading tool
  • Professional-grade accuracy
  • Works with all trading cards
  • Easy-to-use interface
  • Save and track cards
Features
Read full description

Save hundreds on PSA and SGC grading fees! Instant Card Grading gives you professional-quality centering analysis for your trading cards in seconds. Free, fast, and accurate pre-grading before you submit to PSA or SGC. Key Features: - Instant centering analysis - Free pre-grading tool - Professional-grade accuracy - Works with all trading cards - Easy-to-use interface - Save and track your cards Perfect for: - Collectors pre-screening cards for official grading submission - Trading card investors - Sports card enthusiasts - Pokemon card collectors - Vintage card specialists

About

Card Centering Calculator

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.

Highlights
  • 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
Features
Read full description

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. --- Measure in Pixels, Millimeters, or Inches --- Switch from percentages to real measurements. View each border's width in pixels, millimeters, or inches to double-check against calipers or calculate centering your own way. --- 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. --- Pokémon e-Reader Card Mode --- Measure Expedition, Aquapolis, and Skyridge e-Reader cards correctly. The dot-code strip makes the left and bottom borders wider by design, so e-Reader mode compares the top and right borders the way graders do and saves the setting with each card. --- 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.

Screenshots

Instant Card Grading3 screens
Card Centering Calculator4 screens

Verdict

The call

The clearest difference is rating: Card Centering Calculator at 4.7 against Instant Card Grading's 3.5. Card Centering Calculator also leads on review sentiment (60% vs 29%) and ratings volume (2.6K vs 19). Instant Card Grading's advantage is iOS requirement (14.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Instant Card Grading sells 1 one-off in-app purchase and Card Centering Calculator sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Card Centering Calculator holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: Card Centering Calculator has 2.6K ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 29% of Instant Card Grading's written reviews are positive against 60% of Card Centering Calculator's.

UpkeepUpdate frequency

Instant Card Grading ships an update every 4 months, Card Centering Calculator monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
Instant Card Grading versus Card Centering Calculator: the parameters behind the verdict, then further details
ParameterInstant Card GradingCard Centering Calculator
PriceFreeFree
Rating3.5 (19 ratings)4.7 (2.6K ratings) — better
Positive reviews28.6% of reviews60.0% of reviews — better
Number of ratings192.6K — better
Update frequencyEvery 4 monthsMonthly — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS14.0 — better18.0
Further details — not scored
Size28 MB21 MB
Age rating4+4+
Developer12 Triangles LLCJade Lizard Software LLC

Customer experience

Instant Card Grading

All ratings17 ratings
Positive52.9%
Neutral5.9%
Negative41.2%
Written reviews7 reviews
Positive28.6%
Neutral14.3%
Negative57.1%

Card Centering Calculator

All ratings2,459 ratings
Positive93.4%
Neutral1.2%
Negative5.4%
Written reviews135 reviews
Positive60.0%
Neutral2.2%
Negative37.8%

Bugs and requests

Instant Card Grading

Not enough reviews yet to summarise bugs or requests.

Card Centering Calculator

Reported bugs

2 issues
  • Centering measurement resets during use
  • Image rotation doesn't stay in place

Requested features

2 requests
  • Thinner and dashed centering lines for better visibility
  • Free access to grading information without subscription

In-app purchases

1 purchases

Instant Card Grading

One-time1
  • Remove Ads$1.99
5 purchases

Card Centering Calculator

One-time5
  • Small Tip$0.99
  • Medium Tip$1.99
  • Unlock Premium$4.99
Show 2 more
  • Large Tip$4.99
  • Pristine Tip$9.99

Questions

Is Instant Card Grading free?
Instant Card Grading is free to download, with in-app purchases available.
Is Card Centering Calculator free?
Card Centering Calculator is free to download, with in-app purchases available.
Which has better reviews, Instant Card Grading or Card Centering Calculator?
Card Centering Calculator is rated higher. Instant Card Grading averages 3.5 out of 5 from 19 ratings, while Card Centering Calculator averages 4.7 from 2.6K ratings.
Do Instant Card Grading or Card Centering Calculator have ads?
Both Instant Card Grading and Card Centering Calculator show ads.
Which is updated more often, Instant Card Grading or Card Centering Calculator?
Instant Card Grading ships an update every 4 months, and Card Centering Calculator monthly. Most recently, Instant Card Grading was updated on November 3, 2026 and Card Centering Calculator on November 4, 2026.

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