--- title: "PreGrade Ultra - Reviews, Revenue and Downloads in United States | Apple App Store" description: "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 camer" --- # PreGrade Ultra — United States ![PreGrade Ultra App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/56/5a/20/565a2054-7c0e-d779-46a8-759f544d4eed/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png) **Developer:** [Michael Sorg](https://apptail.io/developer/michael-sorg-pnuTSb) **Category:** Developer Tools **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** Msorg.PreGradeUltra **Store:** Apple App Store **Country:** United States **Version:** 5.1 (released 2026-04-20) **Original Release:** 2026-04-09 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6761741791) **AppTail Page:** [https://apptail.io/app/pregrade-ultra-wpnz/united-states](https://apptail.io/app/pregrade-ultra-wpnz/united-states) ## PreGrade Ultra Description 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. ## PreGrade Ultra Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f9/02/5c/f9025c36-1e4c-309b-db2f-c22518062e92/Simulator_Screenshot_-_iPad_Air_13-inch__U0028M4_U0029_-_2026-04-06_at_23.19.40.png/2048x2732.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ea/e5/4b/eae54bec-5f33-302a-862e-c398f1c996ae/Simulator_Screenshot_-_iPad_Air_13-inch__U0028M4_U0029_-_2026-04-06_at_23.19.54.png/2048x2732.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/da/0b/e3/da0be344-0b66-1554-7770-74ce5ab2794c/Simulator_Screenshot_-_iPad_Air_13-inch__U0028M4_U0029_-_2026-04-06_at_23.19.44.png/2048x2732.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/2f/68/d1/2f68d17a-50d2-d84f-5a4f-345b27a29e09/Simulator_Screenshot_-_iPad_Air_13-inch__U0028M4_U0029_-_2026-04-06_at_23.19.34.png/2048x2732.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/2f/41/fe/2f41fea0-53f7-5dcf-772e-7ca0f09e8ab9/Simulator_Screenshot_-_iPad_Air_13-inch__U0028M4_U0029_-_2026-04-06_at_23.17.34.png/2048x2732.png) ## PreGrade Ultra In-App Purchases | Item | Price | |------|-------| | PreGrade Ultra Pro | $4.99 | ## PreGrade Ultra Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Grossing | Canada | Developer Tools | #9 | | Top Free | Belgium | Developer Tools | #99 | | Top Free | Greece | Developer Tools | #122 | | Top Free | Poland | Developer Tools | #192 | | Top Free | Singapore | Developer Tools | #202 | | Top Free | United States | Developer Tools | #248 | | Top Free | Canada | Developer Tools | #281 | | Top Free | Finland | Developer Tools | #286 | | Top Free | United Kingdom | Developer Tools | #300 | | Top Free | Denmark | Developer Tools | #381 | | Top Free | Czechia | Developer Tools | #410 | ## PreGrade Ultra Available In - [Canada](https://apptail.io/app/pregrade-ultra-wpnz/canada) - [United States](https://apptail.io/app/pregrade-ultra-wpnz/united-states) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*