Instantly calculate buy, sell, and trade values for trading cards. Offers simple and advanced modes for quick checks or detailed record-keeping. Supports multiple currencies and includes a dark mode option.
4.5(30 ratings)
FreeIn-App Purchases
Best apps like Proof Authentication
10+ similar apps compared and reviewed
4.2 avg rating
10 free apps
Updated July 2026
Proof Authentication is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.
Top Alternatives to Proof Authentication
MintySlab® | Card Centering by Peryer Technologies LLC
Sports & TCG Card CenteringStrong Contender
🔧 Utilities
4.6(9 ratings)
FreeAdsIn-App Purchases
This app uses advanced computer vision to analyze the centering of sports and TCG trading cards. Get instant, accurate centering results to inform grading decisions and prepare cards for submission.
Card Grading Tool by Computing & Dreams BVBA
Grade trading cards like a proWorth Considering
🔧 Utilities
0.0(0 ratings)
FreeAds
Analyze and measure the centering of your trading cards with precision tools. This app helps collectors determine grading potential and share results, supporting various card types.
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4
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
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free with in-app purchases5
Card Centering Calculator: CCC
Grading Tool for Trading Cards
Free
This app helps trading card collectors accurately measure card centering for professional grading. It offers automatic border detection with manual adjustments, clear measurement results, and the ability to compare potential grades across major companies. Save and manage your analyzed cards to stop guessing and start measuring.
Accurate centering measurementsAutomatic border detectionManual guide adjustments
🔧 Utilities
(16)
free with in-app purchases6
Digimarc Discover
by Digimarc
Free
Easily scan various barcode types, including Digimarc Barcodes, 1D barcodes, and QR codes, to quickly access online content. This app showcases the capabilities of Digimarc's barcode technology and its mobile SDK for efficient product identification.
Scan Digimarc BarcodesScan 1D barcodes (UPC, EAN, Code 39, etc.)Scan QR codes
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free7
Digimarc Verify
by Digimarc
Free
This business utility app validates data accuracy on packaging and thermal labels. It ensures the imperceptible Digimarc digital watermark correctly matches traditional barcode information, aiding brand owners and their suppliers in quality management.
Validate packaging and label data accuracyCompare Digimarc digital watermark to traditional barcodesScan GTIN information
🔧 Utilities
(17)
free8
Card Centering Calculator
TCG & Sports Card Grading Tool
Free
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.
AI-powered card centering detectionManual centering measurement with zoomGrade comparisons for PSA, BGS, SGC, CGC, TAG, ACE
🔧 Utilities
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free with in-app purchases9
Moonitor Notifications
AIO Monitoring Solutions
Free
Receive important Discord notifications directly on your mobile device. This app bridges the gap between your Discord groups and your phone, ensuring you never miss critical updates. If your Discord group isn't yet supported, encourage your admins to reach out for integration.
Discord notification transferMobile alertsGroup notification support
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Instant Card Grading
Instantly center grade cards!
Free
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.
Instant centering analysisFree pre-grading toolProfessional-grade accuracy
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(19)
free with in-app purchases