PreGrade Ultra is the most accurate card centering tool available — the only app that corrects for camera angle before measuring. PERSPECTIVE CORRECTION Other centering apps measure your photo as-is. If your camera is even slightly angled, every measurement is wrong. PreGrade Ultra uses homography-based perspective correction to mathematically flatten your card to its true 63×88mm dimensions before measuring borders. The result: centering accuracy within 2% of professional grading equipment. PRECISION CENTERING ANALYSIS - Measure left/right and top/bottom centering ratios - Millimeter-precision border measurements - Front and back analysis with separate thresholds - Visual edge detection confirms your guide placement 8 GRADING COMPANIES Instant centering grades from PSA, BGS, CGC, TAG, SGC, ACE, AGS, and Arena Club. Every company has different thresholds — see exactly which grade your card qualifies for at each one, with full threshold breakdowns. CROSS-GRADE OPPORTUNITIES Already have a graded card? See which companies would give a higher centering grade. The Understand tab shows your best market-value grade at a glance. MARKET PRICING Look up active eBay listings for any Pokémon card. See current market prices for raw and graded cards across all major grading companies. BUILT FOR COLLECTORS, NOT ADVERTISERS No ads. No banner spam. No "support the dev" begging. PreGrade Ultra is a professional tool built by a collector who got tired of inaccurate apps and guesswork. 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 or endorsed by any grading company.
