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Best Grading Tool Apps

219+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated July 2026

The best grading tool apps on iPhone average 4.7★ across 219+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.

Compare top Grading Tool Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Card Centering CalculatorCard Centering CalculatorFree4.7★ (2.1K)YesYesJul 2026
2HoloDex - TCG Scan & CollectHoloDex - TCG Scan & CollectFree4.8★ (19K)NoYesJul 2026
3Digital Grading CoDigital Grading CoFree4.6★ (2K)YesYesJul 2026
4Groovy GraderGroovy GraderFree4.9★ (47K)NoYesJul 2026
5Binder AI: Card Grading ToolBinder AI: Card Grading ToolFree4.5★ (454)NoYesJul 2026
6Easy Grade - EZ GraderEasy Grade - EZ GraderFree4.9★ (11K)YesYesJul 2026
7Easy Grading CalculatorEasy Grading CalculatorFree4.8★ (37)YesYesJul 2026
8ZipGradeZipGradeFree4.9★ (35K)NoYesJul 2026

Top Picks for Grading Tool

Card Centering Calculator#1

Card Centering Calculator by Jade Lizard Software LLC

TCG & Sports Card Grading Tool
Editor's Choice
🔧 Utilities
4.7😊(2.1K ratings)
FreeAdsIn-App Purchases
Card Centering Calculator screenshot 1
Card Centering Calculator screenshot 2
Card Centering Calculator screenshot 3
Card Centering Calculator screenshot 4
Card Centering Calculator screenshot 5
Card Centering Calculator screenshot 6

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.

What We Love

  • 👍 Intuitive and flexible
  • 🚀 Provides great information on centering
  • 💡 Helpful for graders and collectors
  • 👍 Easy to use and user-friendly

Room to Improve

  • 🐛 Centering measurement doesn't work properly
  • 🔒 Grading information locked behind paywall
  • 🐛 Camera quality issues, app resets during use
HoloDex - TCG Scan & Collect#2

HoloDex - TCG Scan & Collect by MAVELLI FZCO

Scan, grade & organize cards.
Strong Contender
🔍 Reference
4.8(19K ratings)
FreeIn-App Purchases
#15in Reference
HoloDex - TCG Scan & Collect screenshot 1
HoloDex - TCG Scan & Collect screenshot 2
HoloDex - TCG Scan & Collect screenshot 3
HoloDex - TCG Scan & Collect screenshot 4
HoloDex - TCG Scan & Collect screenshot 5
HoloDex - TCG Scan & Collect screenshot 6

Effortlessly scan, identify, and organize your trading card collection. Get real-time market prices, AI-powered grading insights, and manage your entire collection digitally across multiple TCGs. Keep your collection safe and accessible anywhere.

Digital Grading Co#3

Digital Grading Co by Dominic Wood

AI Grading, Pricing & Trading
Worth Considering
🎬 Entertainment
4.6😞(2K ratings)
FreeAdsIn-App Purchases
#87in Entertainment
Digital Grading Co screenshot 1
Digital Grading Co screenshot 2
Digital Grading Co screenshot 3
Digital Grading Co screenshot 4
Digital Grading Co screenshot 5

Transform your smartphone into an AI-powered grading tool for collectibles like TCGs and sports cards. Get instant, expert-level insights on card condition, market value, and collector strategy. Make smarter decisions about holding, trading, or selling your collection.

What We Love

  • 🚀 Accurate grading
  • 👍 Easy to use
  • 💡 Helpful for collectors
  • 🚀 Quick grading process

Room to Improve

  • 🐛 Buggy and glitchy
  • 🐛 Camera issues and blurry images
  • 🐛 Inconsistent grading

More Grading Tool apps to explore

4
Groovy Grader
Groovy Grader
Groovy Grader
by Dryrain Technologies LLC
Free

This app replaces traditional paper grading calculators with a flexible and convenient digital tool. It offers customizable settings for numerous questions and displays grades in various formats, enhancing classroom efficiency.

Replaces paper grading calculatorsConfigurable for hundreds of questionsGrade display options (whole number/decimal)
📚 Education
(47K)
free with in-app purchases
5
Binder AI: Card Grading Tool
Binder AI: Card Grading Tool
Binder AI: Card Grading Tool
Scan & Grade All Trading Cards
Free

Easily scan and analyze the condition of your trading and sports cards using AI. Get detailed grading insights before sending them to professional services, helping you make informed decisions about whether to grade or keep your cards raw.

AI card grading analysisScan front and back of cardsDetailed condition notes
🔧 Utilities
(454)
subscription
6
Easy Grade - EZ Grader
Easy Grade - EZ Grader
Easy Grade - EZ Grader
The EZ Grader with half-points
Free

Effortlessly grade student papers with this digital tool. Customize test parameters, choose grading methods, and adjust display settings for a personalized experience. Offers advanced features like half-point grading through an in-app purchase.

Adjust number of questionsGrade by questions right/wrongHalf-point grading option
📚 Education
(11K)
free with in-app purchases
7
Easy Grading Calculator
Easy Grading Calculator
Easy Grading Calculator
Grade Assignments & Tests Fast
Free

Instantly calculate accurate percentages and grades for assignments and tests. Input total questions and correct/incorrect answers to simplify your grading process. Supports various grading scales and customizability for efficient teaching.

Calculate percentages and grades instantlyOrder by correct or incorrect answersSupport for letter, pass/fail, and point-based grading
🔧 Utilities
(37)
free with in-app purchases
8
ZipGrade
ZipGrade
ZipGrade
Paper Grading App
Free

Instantly grade multiple-choice tests and quizzes using your device's camera. This app offers a fast and accurate way for educators to assess student work, with features for organizing and exporting results. It provides immediate feedback to inform lesson planning and assignments.

Instant grading with device cameraSupports multiple choice tests and quizzesOrganizes and exports results (PDF, Excel)
📚 Education
(35K)
free with in-app purchases
9
PSA: Card Scanner & Grading
PSA: Card Scanner & Grading
PSA: Card Scanner & Grading
Scan. Price. Grade. Collect.
Free

This app helps collectors identify, price, and manage their trading card collections. It offers a powerful scanner, real-time pricing, grading submission tracking, and seamless selling options on eBay.

Card identification and pricingCollection management and portfolio trackingStreamlined grading submissions
🔍 Reference
(48K)
free with in-app purchases
10
카드 그레이더 프로
카드 그레이더 프로
카드 그레이더 프로
AI 및 전문가 카드 등급 평가
Free

Instantly assess the condition of your trading cards with AI-powered analysis of centering, edges, corners, and surface. For a more in-depth evaluation, choose expert human grading for detailed notes, rarity assessment, and submission guidance. Explore a community showcase of graded cards and view their market prices.

AI-powered instant gradingExpert human gradingCondition notes and rarity assessment
🔧 Utilities
(4.1K)
free with in-app purchases
11
Quick Key Mobile Grading App
Quick Key Mobile Grading App
Quick Key Mobile Grading App
by Design by Educators, Inc
Free

Easily grade paper quizzes and digital assessments using a mobile device. Supports both paper and paperless classrooms, offering automatic reporting and seamless integration with popular learning management systems. Secure and compliant with student privacy regulations.

Grade paper quizzes with phone cameraSend digital quizzes to student devicesWorks offline
📚 Education
(221)
free
12
QuickGrader
QuickGrader
QuickGrader
Calculate Test Percentages
Free

Easily calculate test percentages and assign letter grades with this intuitive tool. Customize grading scales, handle half-point values, and utilize pass/fail options. Features a modern interface with dark and light modes, and prevents screen dimming for uninterrupted grading.

Calculate percentages and letter gradesCustomizable grade scalesHalf-point values and decimal precision
📚 Education
(5.3K)
free with in-app purchases
13
Card Centering & Grading Tool
Card Centering & Grading Tool
Card Centering & Grading Tool
AI Digital TCG Sports Scan
Free

This app uses AI and manual tools to precisely evaluate trading and sports cards for professional grading standards. It calculates centering ratios and predicts potential scores from top grading companies, supporting various card types like Pokémon, Magic: The Gathering, and sports cards.

AI-powered centering analysisManual precision measurement toolsGrading company score prediction
🔧 Utilities
(6)
freemium
14
TCG Grading: Karten Bewerten
TCG Grading: Karten Bewerten
TCG Grading: Karten Bewerten
Pre-Grading, Preise & PSA
Free
$8.99 | 100% OFF

Instantly assess the condition and value of your trading cards using advanced AI. Get professional-grade condition reports, pre-screen cards for grading services, and manage your collection with real-time market data.

Instant AI condition assessmentPSA grading pre-screeningCollection management
🔧 Utilities
(50)
free with in-app purchases
15
Centering50: Card Grading Tool
Centering50: Card Grading Tool
Centering50: Card Grading Tool
Precise card centering ratios
Free

This tool helps collectors accurately measure card centering ratios for TCG and sports cards. It uses AI-assisted scanning and manual guides to provide precise measurements, helping users predict grades and save on submission fees.

AI-assisted border detectionManual measurement guidesFront and back analysis
🔧 Utilities
(12)
free with in-app purchases
16
iGrader teacher grading table
iGrader teacher grading table
iGrader teacher grading table
by Tental Software
Free

This app helps teachers and professors quickly calculate assignment and test grades. Simply adjust a slider for the number of questions, and it instantly displays all possible grades based on the number of incorrect answers. It offers a streamlined grading process for educators.

Automatic grade calculationAdjustable question count sliderFull grade list display
📚 Education
(2)
free with in-app purchases
17
AI Card Grading - GradeIQ
AI Card Grading - GradeIQ
AI Card Grading - GradeIQ
TCG & Sports Card Grader Tool
Free
🔧 Utilities
(0)
18
Easy Grader Tool
Easy Grader Tool
Easy Grader Tool
Easy Grader
Free

Quickly calculate assignment grades with a calculator or scan a table of possible results. Supports multiple grading scales for accurate letter grade calculation. Ideal for educators needing fast grading references.

Grade calculation modeGrade chart modeCustomizable grading scales
📚 Education
(4)
ad-supported
19
SlabMate: Grading Companion
SlabMate: Grading Companion
SlabMate: Grading Companion
Search Certs & AI Grading
Free

Instantly search graded trading cards by certificate number across multiple grading authorities. Utilize AI tools for grading opinions on your cards before professional submission. Organize your collection and make informed decisions.

Quick certificate number searchAI grading insightsCollection organization tools
🔍 Reference
(1)
free with in-app purchases
20
DCM Grading
DCM Grading
DCM Grading
AI-Powered Card Grading
Free
🎬 Entertainment
(0)

FAQ about Grading Tool

What are the best grading tool apps for iPhone?
Card Centering Calculator tops our grading tool apps ranking as of July 2026, with a 4.7-star average from 2.1K App Store ratings, and it's free to download.
Yes — 20 of the top grading tool apps we rank are free to download, including Card Centering Calculator and HoloDex - TCG Scan & Collect.
Card Centering Calculator shows ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 219+ grading tool apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
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.
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.