Comparison

Card Centering & Grading Tool vs Caliper 卡牌居中检测

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

Head to head
About

Card Centering & Grading Tool

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.

Highlights
  • AI-powered centering analysis
  • Manual precision measurement tools
  • Grading company score prediction
  • Front and back centering evaluation
  • Universal card type support
  • Customizable detection settings
Features
Read full description

Card Centering provides trading card and sports card enthusiasts with a precise way to evaluate if their cards meet professional grading standards. Utilizing advanced AI technology alongside manual tools, the app calculates exact centering ratios, predicting how your card might score with top grading companies such as PSA, BGS, CGC, SGC, TAG, and ACE. Whether you're dealing with Pokémon, One Piece, Lorcana, Magic: The Gathering, or various sports cards, instantly assess whether your card's alignment positions it for a premium grade. Enhanced User Benefits: - AI-Powered Scanning: Simply snap a photo or upload an image of your card, and the app instantly detects and calculates centering for unparalleled accuracy. - Manual Precision Tools: For those who prefer a hands-on approach, use adjustable measurement guides with zoom capabilities to ensure maximum precision. - Grading Company Insights: Discover which grading service your card is likely to score highest with, enabling informed decisions. - Comprehensive Analysis: Evaluate the centering on both the front and back of cards to ensure complete assessment coverage. - Accessible Standards Guide: Quickly refer to official centering standards from major grading companies all within the app. - Personalized Experience: Customize detection settings, grading preferences, and display styles to suit your unique needs. - Universal Compatibility: Supports all card types, from TCGs to sports cards, reinforcing its versatility. Perfect For: - Collectors: Verify card grading standards before official submissions to prepare confidently. - Sellers & Traders: Highlight accurate centering to boost the value and appeal of your cards. - Buyers: Assess alignment effortlessly to avoid overpaying on misaligned cards. Key Considerations: Card Centering specializes in centering analysis. Professional grading involves a holistic evaluation including edges, corners, and surface conditions. Independence Notice: Card Centering operates independently and is not affiliated with, endorsed by, or associated with PSA, BGS, CGC, SGC, TAG, ACE, or any grading entity. It serves as an informational tool for card enthusiasts. # Subscription For the Pro subscription, subscriptions will be billed monthly or annually for renewal within 24 hours before the end of the current period. Subscriptions will automatically renew unless canceled at least 24 hours before the end of the current period. Subscriptions can be managed by the user and automatic renewal can be turned off by accessing the user’s account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Payment will be charged to iTunes Account at confirmation of purchase. Terms of Use: https://warthoglab.com/terms-of-use Privacy: https://warthoglab.com/privacy-policy

About

Caliper 卡牌居中检测

This app helps trading card collectors measure card centering before grading. It uses your device's camera to analyze card corners and print alignment, providing centering percentages and estimated grading scores for major services. Save, share, and access card resources.

Highlights
  • Real-time perspective correction preview
  • Precise print alignment reference lines
  • Displays centering percentages
  • Estimates PSA, CGC, BGS scores
  • Supports various zoom and fine-tuning methods
  • Save and share measurement results
  • Card resources and illustrator information
Features
Read full description

Caliper 帮助集换式卡牌收藏者在送评前测量卡牌居中情况。\n\n拍摄或选择一张清晰照片,将四个角点放到卡牌实体边缘,再在自动校正的预览图中对齐印刷画面参考线。Caliper 会计算左右和上下居中比例,并提供 PSA、CGC、BGS 的参考估算。\n\n主要功能:\n\n- 调整卡牌外角时实时更新透视校正预览\n- 精确放置印刷画面四条参考线\n- 显示左右、上下居中比例\n- 提供 PSA、CGC、BGS 参考估算\n- 支持双指、滚轮、按钮缩放和键盘精调\n- 保存或分享测量结果图片\n- 提供精选卡牌资料、文章和插画师信息\n- 支持英文、简体中文、日文、西班牙文和泰文\n\n选择的照片和测量结果图片只在设备本地处理。Caliper 仅发送匿名的产品交互与诊断事件,不上传卡牌图片、不要求注册账户、不展示广告,也不会跨应用或网站跟踪用户。\n\n居中只是评级的一部分。边角、边缘、表面状态以及评级机构的判断都会影响最终等级。Caliper 提供测量参考,不保证最终评级结果。

Screenshots

Card Centering & Grading Tool4 screens
Caliper 卡牌居中检测3 screens

Verdict

The call

The clearest difference is rating: Caliper 卡牌居中检测 at 5.0 against Card Centering & Grading Tool's 4.2. Caliper 卡牌居中检测 also leads on in-app purchases (none vs 4) and iOS requirement (15.0 vs 18.0). Card Centering & Grading Tool's advantage is ratings volume (13 vs 1). On price, update cadence, ads 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. Card Centering & Grading Tool sells 4 in-app purchases, starting at $3.99 per 7 days. Caliper 卡牌居中检测 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Caliper 卡牌居中检测 holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Card Centering & Grading Tool has 13 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Card Centering & Grading Tool ships an update monthly, Caliper 卡牌居中检测 fortnightly. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.

Scorecard5 real differences · 5 level
Card Centering & Grading Tool versus Caliper 卡牌居中检测: the parameters behind the verdict, then further details
ParameterCard Centering & Grading ToolCaliper 卡牌居中检测
PriceFreeFree
Rating4.2 (13 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings13 — better1
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size16 MB31 MB
Age rating4+4+
DeveloperWarthogLabGoHiMicroElectronics Co., Ltd.

Customer experience

Card Centering & Grading Tool

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Caliper 卡牌居中检测

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Card Centering & Grading Tool

Subscriptions4
  • Gradeon Weekly Pro3 Days trial$3.997 Days
  • Gradeon Weekly Pro$3.997 Days
  • Gradeon Annual Pro3 Days trial$19.991 Year
Show 1 more
  • Gradeon Annual Pro$19.991 Year
None

Caliper 卡牌居中检测

No in-app purchases

Questions

Is Card Centering & Grading Tool free?
Card Centering & Grading Tool is free to download, with in-app purchases available.
Is Caliper 卡牌居中检测 free?
Caliper 卡牌居中检测 is free to download, with no in-app purchases.
Which has better reviews, Card Centering & Grading Tool or Caliper 卡牌居中检测?
Caliper 卡牌居中检测 is rated higher. Card Centering & Grading Tool averages 4.2 out of 5 from 13 ratings, while Caliper 卡牌居中检测 averages 5.0 from 1 ratings.
Do Card Centering & Grading Tool or Caliper 卡牌居中检测 have ads?
Neither Card Centering & Grading Tool nor Caliper 卡牌居中检测 shows ads.
Which is updated more often, Card Centering & Grading Tool or Caliper 卡牌居中检测?
Card Centering & Grading Tool ships an update monthly, and Caliper 卡牌居中检测 fortnightly. Most recently, Card Centering & Grading Tool was updated on October 22, 2026 and Caliper 卡牌居中检测 on October 26, 2026.

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