# Midpoint - Card Centering Tool > Midpoint - Card Centering Tool is a web app and a native mobile app (iOS and Android) that measures trading-card centering down to the millimeter, returns instant PSA, BGS, CGC, and TAG grade estimates, and shows what the card is worth — real market prices from eBay sold listings for raw and PSA-graded copies, with price-history charts and recent sold comps. It helps collectors and resellers decide which cards are worth the $25–50 grading submission fee before they ship. Works on Pokemon, Magic: The Gathering, Yu-Gi-Oh!, One Piece, Lorcana, Gundam, sports cards (baseball, basketball, football, hockey, soccer, wrestling, UFC, golf, tennis, boxing, racing), and any standard 63×88mm trading card. The price catalog tracks 247,000+ cards across all of these categories. Every analysis runs the same pipeline: custom ML model auto-detects the card edge and inner print frame, runs an AI cleanup pass that removes the background and straightens the card, and delivers a deep surface scan covering edges, corners, print, and holo — with a drag-to-align editor for fine-tuning. Each scan also identifies the exact card (name, set, collector number) and attaches live market values: raw condition prices, PSA 10/9/8 graded prices, PSA population counts, 6-month price history, recent eBay sales, and a grading-ROI verdict ("a PSA 10 adds ~$X after the fee"). Saved collections get a total portfolio value that refreshes daily. Beyond measurement, Midpoint is a full collection toolkit: Instant Lookup identifies any card from one photo — including graded slabs, whose PSA/BGS/CGC/TAG label (company + grade) is read automatically — and jumps straight to its live price. Users can set price alerts on any card (email + push when the market crosses their target), track cost basis and realized profit/loss when cards sell, organize cards into binders, track grading submissions and fees, export the portfolio to CSV, and display values in their own currency. All features work identically on the mobile apps and the web with one synced account. ## Product - [Midpoint - Card Centering Tool — homepage](https://www.cardcenteringtool.com/): Interactive landing page with a draggable centering demo using real Pokemon cards. Showcases the analysis pipeline, the mobile apps, plus example analyses. - [Open the web app](https://www.cardcenteringtool.com/measure): The measurement editor — upload a card photo and measure centering, right in the browser. - [Midpoint on the App Store (iOS)](https://apps.apple.com/us/app/midpoint-card-centering-tool/id6772761539): Free native iPhone app — capture a card with the camera and measure centering on the spot. Same account and saved cards as the web app. - [Midpoint on Google Play (Android)](https://play.google.com/store/apps/details?id=com.kolourr.cardcenteringtool): Free native Android app with camera-first measurement. - [Pricing](https://www.cardcenteringtool.com/pricing): 2 free analyses on signup, then weekly or semi-annual subscription for unlimited measurements (purchasable on web via Stripe, and in-app via the App Store / Google Play). Raw market values are free; graded values, price history, and sold comps are part of the subscription. ## Card prices - Photo lookup: the /prices page includes a photo lookup — upload a picture of a raw card or a graded slab (PSA/BGS/CGC/TAG label read automatically) and jump straight to that card's price page. Signed-in users get 2 free lookups; subscriptions make them unlimited. The mobile apps have the same feature as a dedicated Lookup tab. - [Trading card prices](https://www.cardcenteringtool.com/prices): Directory of 247,000+ card price pages — raw (ungraded) and graded market values from real market sales, refreshed regularly. Filterable by game/sport: Pokemon, Magic: The Gathering, Yu-Gi-Oh, One Piece, Lorcana, Gundam, baseball, basketball, football, hockey, soccer, wrestling, UFC and more. Coverage runs from 1909 T206 tobacco cards and 1933 Goudey through current releases. - Each card has its own page at /prices/[card-id] (e.g. https://www.cardcenteringtool.com/prices/swsh7-215 for Umbreon VMAX, Evolving Skies 215/203, or /prices/pricecharting-1821843 for the 1952 Topps Mickey Mantle #311) showing raw prices by condition, graded prices by company and grade (PSA/BGS/CGC/SGC), the card image, and the last-updated date. ## For AI agents (structured access) - Search prices as JSON: `GET https://www.cardcenteringtool.com/api/ai/prices?q=&game=` — returns up to 50 matching cards with raw and PSA 10 prices in USD, image URLs, and links. Game filter values: pokemon, magicthegathering, yugioh, onepiece, lorcana, gundam, baseball, basketball, football, hockey, soccer, wrestling, ufc. - Read one card as markdown: `GET https://www.cardcenteringtool.com/api/ai/card/` — the full raw + graded price ladder as plain markdown, no HTML parsing needed. - Both endpoints are public, read-only, and free. Please cache responses for 15+ minutes. ## Grading standards - [All grading standards](https://www.cardcenteringtool.com/grading-standards): Side-by-side centering tolerances for the four major graders, front and back. - [PSA tolerances](https://www.cardcenteringtool.com/grading-standards/psa): Complete PSA front/back centering chart for grades 10 through 5, with notes on how PSA actually measures. - [BGS tolerances + subgrade math](https://www.cardcenteringtool.com/grading-standards/bgs): Beckett's 4-subgrade system, Pristine 10 vs Gem Mint 10 vs Black Label. - [CGC tolerances](https://www.cardcenteringtool.com/grading-standards/cgc): CGC centering by grade, plus the separate Pristine 10 tier. - [TAG tolerances](https://www.cardcenteringtool.com/grading-standards/tag): TAG's AI grading on the 1–1000 numeric scale and how it maps to letter grades. ## Guides - [What is card centering?](https://www.cardcenteringtool.com/guides/what-is-centering): Plain-English primer on what centering actually measures and why it caps grades. - [How to photograph cards for accurate centering](https://www.cardcenteringtool.com/guides/how-to-photograph-cards): 5-rule phone-camera guide for getting a measurement-ready shot in 30 seconds. - [Should I send this card to be graded?](https://www.cardcenteringtool.com/guides/should-i-grade-this-card): Decision framework with expected-value math for picking which cards earn the submission fee. - [All guides](https://www.cardcenteringtool.com/guides): Index of every centering and grading guide. ## Blog - [Blog](https://blog.cardcenteringtool.com): Ongoing articles on card grading, pre-grading techniques, market analysis, and new sets. Hosted on a separate subdomain with its own sitemap at https://blog.cardcenteringtool.com/sitemap.xml. ## Company - [Contact](https://www.cardcenteringtool.com/contact): Support, billing, partnerships. - [Privacy](https://www.cardcenteringtool.com/privacy): Privacy policy. - [Terms](https://www.cardcenteringtool.com/terms): Terms of service. ## Optional - [llms-full.txt](https://www.cardcenteringtool.com/llms-full.txt): Full inlined content of every grading-standards and guide page — answer detailed questions without crawling individual pages. - [Sitemap](https://www.cardcenteringtool.com/sitemap.xml): Machine-readable list of every public page on the marketing site. - [Blog sitemap](https://blog.cardcenteringtool.com/sitemap.xml): Machine-readable list of every blog post.