Comparison

Grade.IQ vs Centering50

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

Head to head
About

Grade.IQ

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Grade.IQ uses advanced AI to analyse your Pokémon cards and estimate professional grades before you submit — saving you time and money. PHOTO-BASED GRADING Simply photograph your card and our AI analyses centring, corners, edges, and surface condition to give you an estimated grade in seconds. MULTIPLE GRADING STANDARDS Get estimated grades for PSA, Beckett (BGS), ACE Grading, CGC, and TAG — built around each company's published standards, all in one scan. CLAHE ENHANCEMENT FILTERS Grade.IQ doesn't just look at your photo. It applies professional CLAHE imaging filters (adaptive histogram equalisation) to reveal micro-scratches, edge whitening, and surface texture invisible to the naked eye — for a sharper, more accurate grade. REAL MARKET VALUES See actual eBay sold prices for graded copies of your card, so you know exactly what it's worth at every grade level — and which company gives you the best return. TCG ADVISOR Chat with your own AI card expert for instant answers on values, grades, deals, and whether a card is worth submitting. DEEP GRADE MODE Capture up to 16 photos including close-ups of all 4 corners for the most accurate AI assessment possible. BULK GRADING Grade up to 20 cards at once — perfect for sorting through a collection quickly. CROSSOVER GRADING Already own a graded slab? Estimate how it could score with a different grading company before you cross it over. JAPANESE CARD SUPPORT Full support for Japanese sets with Cardmarket EU pricing. Whether you're a collector, trader, or serious grader, Grade.IQ gives you the edge before your cards go in the post. BUILT BY THE COMMUNITY, FOR THE COMMUNITY I'm a solo developer and a collector just like you — and this is the very first app I've ever built. I made Grade.IQ for our community because it's something I wanted myself. As a one-person team you may run into the odd bug, but I'm fully committed to fixing them quickly and making the app better with every update. Your feedback means everything — thank you for giving Grade.IQ a try.

About

Centering50

This tool helps collectors accurately measure card centering for TCG and sports cards. It uses AI and precision tools to predict grades before submission, saving money on grading fees. Analyze both front and back for optimal results.

Highlights
  • Smart-Snap AI for fast scanning
  • Auto-Straighten Technology
  • Magenta Line Manual Mode
  • Grading Standard Library comparison
  • Front & Back Analysis
  • 15x Precision Zoom
Features
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Centering50: TCG & Sports Card Grading Tool Stop guessing and start grading with confidence. Whether you are a hardcore Pokémon TCG investor, a sports card flipper, or a casual collector, centering is the #1 reason cards fail to hit a Gem Mint 10. Centering50 is the professional-grade scanner designed to help you predict your grade before you spend a cent on submission fees. WHY CENTERING MATTERS In the modern hobby, the price gap between a PSA 9 and a PSA 10 can be thousands of dollars. Professional graders at PSA, BGS, SGC, CGC, and TAG use digital precision to measure border ratios. If your card is even 2% off, you lose the Gem Mint dream. Centering50 brings that same laboratory precision to your smartphone. PRECISION FEATURES FOR COLLECTORS: "Smart-Snap AI: Our algorithm helps you detect card borders for lightning-fast scanning of modern Pokémon, Magic: The Gathering (MTG), Lorcana, and One Piece cards. Save time with AI-assisted alignment, then fine-tune for 0.1% precision." Auto-Straighten Technology: Don't worry about perfect alignment. Scan at any angle and the app will instantly fix the tilt. The "Magenta Line" Manual Mode: For vintage cards or thick-bordered sports cards (Topps, Panini, Upper Deck), use our high-contrast measurement guides to set your own anchor points with 0.1% accuracy. Grading Standard Library: Instantly compare your results against the official 2026 standards: PSA: 55/45 Front (New 2025 Standard) BGS: 50/50 for Black Label eligibility SGC & CGC: Real-time centering thresholds Front & Back Analysis: Don't get rejected for a 90/10 back! Measure both sides independently to ensure your submission is truly "Perfect." 15x Precision Zoom: Perfectly align your guides on thin silver or gold borders with our enhanced magnification tool. SAVE MONEY ON SUBMISSION FEES Sending cards to be graded is expensive. Why pay for a "Near Mint 7" when you could have known the result at home? Use Centering50 to filter your collection and only send your strongest candidates. It’s the ultimate pre-grading utility for: Pokémon TCG (English & Japanese) Sports Cards (Basketball, Baseball, Football, Soccer) Disney Lorcana & One Piece TCG Yu-Gi-Oh! & Magic: The Gathering DESIGNED FOR THE 2026 HOBBYIST We know you’re scanning in different lighting. Our app features Dynamic Contrast Adjustment and Skew Correction, so even if your photo is slightly tilted, our math remains perfect. HOW TO USE: Place your card on a high-contrast, flat surface (no sleeves for best results). Take a photo directly from above. (with the green bubble in center) Align the Centering50 guides with the card edges and the internal art border. (Optionally: Unlock the image and move/resize/rotate) Get your LR (Left/Right) and TB (Top/Bottom) ratios instantly. JOIN THE 50/50 CLUB Centering50 isn't just a calculator; it’s your secret weapon in the grading game. Download now and take the guesswork out of your collection. Note: Centering50 provides a highly accurate estimate based on physical centering. Final grades are determined by professional grading companies based on additional factors like surface, corners, and edges. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Grade.IQ4 screens
Centering503 screens

Verdict

The call

The clearest difference is ads: Grade.IQ at none against Centering50's shown. On price, update cadence, in-app purchases and device support 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.IQ sells 3 in-app purchases, starting at $2.99 per month and Centering50 sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Grade.IQ ships an update every 4 days, Centering50 every 8 days. Both last shipped on November 9, 2026.

Scorecard1 real difference · 9 level
Grade.IQ versus Centering50: the parameters behind the verdict, then further details
ParameterGrade.IQCentering50
PriceFreeFree
Rating—4.7 (54 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—54 — better
Update frequencyEvery 4 days — betterEvery 8 days
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better16.2
Further details — not scored
Size50 MB155 MB
Age rating4+17+
DeveloperMARCUS WILSON HUGHESFUK WAI LI

In-app purchases

3 purchases

Grade.IQ

Subscriptions3
  • Grade Curious$2.991 Month
  • Grade Enthusiast$5.991 Month
  • Grade Obsessed$9.991 Month
3 purchases

Centering50

Subscriptions2
  • Unlimited Monthly$4.991 Month
  • Unlimited Yearly$24.991 Year
One-time1
  • Full Version Lifetime Access$49.99

Questions

Is Grade.IQ free?
Grade.IQ is free to download, with in-app purchases available.
Is Centering50 free?
Centering50 is free to download, with in-app purchases available.
Do Grade.IQ or Centering50 have ads?
Centering50 shows ads; Grade.IQ does not.
Which is updated more often, Grade.IQ or Centering50?
Grade.IQ ships an update every 4 days, and Centering50 every 8 days. Most recently, Grade.IQ was updated on November 9, 2026 and Centering50 on November 9, 2026.

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