Comparison

Grade Sync Pro vs Card Centering Pro

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

Head to head
About

Grade Sync Pro

This AI-powered tool helps trading card enthusiasts identify, analyze, and estimate the condition of collectible cards. It provides detailed grading analysis, centering tools, and market price insights to assist collectors and investors.

Highlights
  • AI card identification
  • AI grading analysis
  • Advanced centering tool
  • PSA submission preparation
  • Market price insights
  • Personal card inventory
Features
Read full description

Scan a card. Know if it’s worth PSA before you pay $60 and wait five months. AI estimate plus centering (left/right, top/bottom) for Pokémon and sports. Not an official grade. Build the list, track the order, same account on iPhone and web. AI Card Identification Simply take a photo of your card and Grade Sync Pro will instantly identify: • Card name • Set and series • Year • Rarity • Player or Pokémon • Card references and details No manual searching required. AI Card Grading Analysis Our AI evaluates your card using professional grading factors similar to PSA and Beckett. Get instant analysis of: • Centering • Corners • Edges • Surface • Overall estimated grade Know whether your card is worth grading before submitting it. Advanced Centering Tool Grade Sync Pro includes professional centering analysis: • Top / Bottom ratio • Left / Right ratio • Grading estimate alignment PSA Submission Preparation Prepare grading submissions in minutes. Grade Sync Pro helps you: • Build submission lists • Track grading status • Manage bulk card submissions • Export submission data Collectors can prepare hundreds of cards quickly. Market Price Insights Evaluate card value using recent market sales data. See estimated value ranges based on recent transactions. Perfect for collectors and investors. Personal Card Inventory Track your graded cards in one place. Store: • Certification numbers • Card images • Grade details • Collection value Manage your entire collection easily. Built for the Hobby Grade Sync Pro is designed for: • Pokémon collectors • Sports card collectors • Hobby shops If you collect trading cards, Grade Sync Pro gives you professional tools to evaluate and manage your collection. Start scanning your cards today and discover the power of AI grading. Privacy Policy URL and ensure https://gsp.cards/privacy Terms of Use (EULA) —Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Card investors • Bulk submitters This helps collectors determine whether a card can achieve PSA 10 or higher.

About

Card Centering Pro

Features
Read full description

Stop paying to grade cards that will never hit a 10. Card Centering Pro measures your card's centering in seconds then tells you if it's worth the submission fee. Front and back, down to the decimal. WHY CENTERING DECIDES YOUR GRADE Centering is the most common reason a card misses Gem Mint. A card that's 70/30 on the back can cap your grade at an 8 — no matter how sharp the corners are. Graders measure it with digital precision. Now so can you, before you spend a cent. HOW IT WORKS 1. Snap or import a photo of your card 2. Edges are detected automatically — or drag the guides yourself 3. Get exact ratios: 55/45, 60/40, 52/48 4. See the best grade each company would give it 5. Submit the winners. Sell the rest raw. FEATURES - AUTO EDGE DETECTION Point your camera at the card. The borders are found for you. - MANUAL PRECISION MODE Vintage card? Thick border? Drag high-contrast guides to any anchor point and pinch to zoom for decimal-level accuracy. - FRONT AND BACK ANALYSIS Back centering sinks more submissions than collectors expect. Measure both sides and see your true ceiling. - GRADING STANDARDS LIBRARY Current centering thresholds for every major service, built in and kept up to date. Know which one gives your card the best shot before you pick a submission. - YOUR COLLECTION, SAVED Every card you measure is stored with its ratios and estimated grade. Build your submission list over weeks, not in one sitting. - WORKS OFFLINE At a card show with no signal? Everything runs on device. BUILT FOR EVERY CARD Pokémon · One Piece · Lorcana · Magic: The Gathering · Yu-Gi-Oh! Baseball · Basketball · Football · Hockey · Soccer · F1 Vintage, modern, holo, foil, full-art, borderless. WHO IT'S FOR COLLECTORS — Screen your box before you submit. One avoided submission pays for the app many times over. SELLERS — Publish exact centering numbers in your listings. Measured cards sell faster and close higher. BUYERS — Check the photos in a listing before you bid. Don't overpay for a card that's off-center. BREAKERS — Rip, measure, sort. Know what's worth slabbing before the box is even empty. Free to measure. Upgrade anytime for unlimited saved cards and full front-and-back analysis. Not affiliated with or endorsed by any grading company. Results are an estimate of centering only and do not predict a final grade, which also accounts for corners, edges and surface.

Screenshots

Grade Sync Pro4 screens
Card Centering Pro4 screens

Verdict

The call

The clearest difference is iOS requirement: Card Centering Pro at 15.0 against Grade Sync Pro's 18.0. On price, update cadence, ads and in-app purchases 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. Grade Sync Pro sells 1 in-app purchase, starting at $24.99 per month and Card Centering Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Grade Sync Pro ships an update every 3 weeks, Card Centering Pro every 4 weeks. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 9 level
Grade Sync Pro versus Card Centering Pro: the parameters behind the verdict, then further details
ParameterGrade Sync ProCard Centering Pro
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeks — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size30 MB41 MB
Age rating4+12+
DeveloperMario MironMatteo Giannessi

In-app purchases

1 purchases

Grade Sync Pro

Subscriptions1
  • GSP Pro Monthly3 Days trial$24.991 Month
1 purchases

Card Centering Pro

One-time1
  • Pro plan$9.99

Questions

Is Grade Sync Pro free?
Grade Sync Pro is free to download, with in-app purchases available.
Is Card Centering Pro free?
Card Centering Pro is free to download, with in-app purchases available.
Do Grade Sync Pro or Card Centering Pro have ads?
Neither Grade Sync Pro nor Card Centering Pro shows ads.
Which is updated more often, Grade Sync Pro or Card Centering Pro?
Grade Sync Pro ships an update every 3 weeks, and Card Centering Pro every 4 weeks. Most recently, Grade Sync Pro was updated on October 9, 2026 and Card Centering Pro on October 7, 2026.

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