# PreGrade Ultra > Card centering analysis app with grading estimates and market pricing. (iPhone/iPad app by Michael Sorg.) - Source: https://appshunter.io/ios/app/pregrade-ultra/id6761741791 (this page in markdown: same URL + `.md`) - Developer: [Michael Sorg](https://appshunter.io/developer/1891223608) - Category: Developer Tools, Games, Card - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 26.4 · 6 MB - Languages: American English - Released: 2026-04-09 - Data updated: 2026-08-26 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/pregrade-ultra/id6761741791/reviews.md ## What is PreGrade Ultra? PreGrade Ultra uses perspective correction to reduce the impact of camera angle on your centering measurements. **PERSPECTIVE CORRECTION** Other centering apps measure your photo as-is. If your camera is even slightly angled, your measurements can lose accuracy. PreGrade Ultra uses homography-based perspective correction to mathematically flatten your card to its true 63×88mm dimensions before measuring borders — centering analysis powered by computer vision. **PRECISION CENTERING ANALYSIS** - Measure left/right and top/bottom centering ratios - Millimeter-level border measurements - Front and back analysis with separate thresholds - Visual edge detection confirms your guide placement - Detect clockwise and counterclockwise print tilt **7 GRADING COMPANIES** Centering grades from PSA, BGS, CGC, TAG, SGC, ACE, and AGS. Every company has different thresholds — see which grade your card may qualify for at each one, with full threshold breakdowns. **CROSS-GRADE OPPORTUNITIES** Already have a graded card? See which companies may give a higher centering grade. The Understand tab highlights your potential best market-value grade at a glance. **MARKET PRICING** Look up active eBay listings for any Pokémon card. See current asking prices for raw and graded cards across most major grading companies. **BUILT FOR COLLECTORS, NOT ADVERTISERS** No ads. No banner spam. PreGrade Ultra is a tool built by a collector, for collectors. 3 free grading sessions included. Unlock unlimited access with a one-time Pro upgrade. **IMPORTANT:** PreGrade Ultra measures centering only. Card grading involves surface condition, corners, edges, and print quality — factors that cannot be assessed from a photo. Results are estimates and are not guaranteed to match any grading company's official assessment. PreGrade Ultra is not affiliated with, endorsed by, or sponsored by any grading company. Pokémon is a trademark of Nintendo, Creatures Inc., and GAME FREAK Inc. eBay is a trademark of eBay Inc. All company names and grading scales are trademarks of their respective owners. ## Key features - Perspective correction for accurate measurements - Centering analysis for multiple grading companies - Cross-grade opportunity identification - Market pricing for Pokémon cards - Visual edge detection - Print tilt detection ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | PreGrade Ultra Pro | $4.99 | one-time | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/pregrade-ultra/id6761741791/reviews.md ### 5/5 — Best on the market. *2026-05-04* Prob the most accurate and detailed centering tool on the market. Better than card centering tool. Better than pack Magik. ### 5/5 — Excellent Tool *2026-04-26* I have tried several electronic centering tools and this one is hands down the best and most user friendly! ## Frequently asked questions about PreGrade Ultra ### What is PreGrade Ultra? PreGrade Ultra is a mobile application designed for trading card collectors. It uses computer vision to analyze the centering of cards from photos, providing estimated grades for various grading companies and market pricing information. ### Does PreGrade Ultra have ads? No, PreGrade Ultra is built for collectors and does not contain advertisements or banner spam, ensuring an uninterrupted user experience. ### How accurate are the centering measurements in PreGrade Ultra? PreGrade Ultra employs homography-based perspective correction to mathematically flatten cards before measuring borders, significantly reducing the impact of camera angle and improving measurement accuracy. ### What grading companies does PreGrade Ultra support? PreGrade Ultra provides centering grade estimates for seven major grading companies: PSA, BGS, CGC, TAG, SGC, ACE, and AGS, with detailed threshold breakdowns for each. ### Can PreGrade Ultra help me find better grading opportunities? Yes, the 'Cross-Grade Opportunities' feature highlights which companies might offer a higher centering grade for your card, potentially increasing its market value. ### What is the pricing for PreGrade Ultra? PreGrade Ultra is free to download and includes 3 free grading sessions. Unlimited access can be unlocked with a one-time Pro upgrade. ### What devices does PreGrade Ultra support? PreGrade Ultra is available on iPhone and iPad devices. ### How often is PreGrade Ultra updated? The latest version of PreGrade Ultra is 16.1, and it was last updated on May 27, 2026, indicating regular development and improvements. ## Version history (last 5 releases) ### 16.1 — 2026-05-27 Bug fix. ### 16 — 2026-05-25 *Edge Anomaly Detection ### 15 — 2026-05-07 Warp Engine Refinements UI Improvements ### 11.0 — 2026-05-04 This release fixes market pricing, tilt data persistence, and UI accuracy across grading, complete, and market tabs. ### 10 — 2026-04-27 UI Improvements Bug Fixes --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*