Point. Scan. Grade.
AI-powered Pokémon card grading that auto-identifies your cards and estimates PSA grades with sub-grade breakdowns. No manual entry. No guesswork.
GEMGRADER
GEMGRADER
GEMGRADERHow it works
Three steps. Zero data entry.
Snap front and back
Frame the card in the viewfinder and tap to capture. The app guides you on lighting and positioning for both sides.
AI analyses condition
On-device computer vision measures centering to sub-pixel precision. Cloud AI inspects corners, edges and surface for micro-defects.
Get your grade
Receive an estimated PSA grade with sub-grade breakdowns, confidence level and a plain-English analysis. See if it’s worth submitting to PSA.
Features
Built for serious collectors
Every feature serves one goal: helping you make better grading decisions. No fluff, no gimmicks.
Auto card identification
OCR reads the card name, set number and rarity. No manual entry, no searching through databases. Works with English and Japanese cards.
Sub-grade breakdowns
Individual scores for centering, corners, edges and surface. See exactly where your card shines and where it falls short.
CV centering measurement
Classical computer vision measures border ratios to sub-pixel accuracy. More precise than any AI estimate, with PSA 10/9 threshold indicators.
Confidence bands
Not just a number. See the probability distribution across grades so you know how certain the estimate really is.
Market pricing
Live raw and graded prices so you can instantly calculate whether professional grading is worth the submission fee.
Shareable reports
Export grade reports optimised for Instagram Stories and Discord. Your grade report is designed to be screenshot-worthy.
The report, not just a number.
Every grade comes with sub-scores, centering ratios, a confidence band, an AI analysis summary and market context.
Charizard ex
Obsidian Flames · 215/197 · Special Art Rare
52/48 L-R · 54/46 T-B (front)
Slight softening at top-left under magnification
Clean edges, no whitening or chipping detected
Faint print line across holo area, otherwise clean
AI ANALYSISStrong candidate for PSA 9. Centering is well within PSA 10 thresholds. The primary limiting factor is a faint diagonal print line across the holographic area, visible under angled light. Corners show minimal softening at the top-left that may or may not be detected during professional grading.
AFTER $30 PSA ECONOMY FEE. WORTH SUBMITTING.
Honest about what AI can do.
PSA's own graders disagree 10–15% of the time on resubmission, rising to 35–50% for borderline PSA 8–10 cards. No AI grading app can be more consistent than PSA itself. We think you deserve to know that.
Our target for matching the exact PSA grade on a 10-point scale. This is the realistic ceiling.
The vast majority of predictions fall within one grade point. Useful for the key decision: submit or skip.
The hardest boundary. Phone cameras lack the resolution for micro-defect detection at PSA 10 standards.
What we do
Confidence bands on every grade. Honest uncertainty flags. Deterministic centering from computer vision. Temperature-zero AI for consistent results. We tell you when we're not sure.
What we don't do
Inflated accuracy claims. Artificial grade caps. The same generic response for every card. We won't tell you a card is a PSA 10 with “99% accuracy” because that number doesn't exist anywhere in this industry.
Coming soon
A public accuracy dashboard showing real PSA grades vs GemGrader predictions, updated from beta tester submissions. No other grading app publishes independently verified accuracy data. We will.
Pay per grade or go unlimited.
Start free. Buy tokens when you need them. Go unlimited if you're grading seriously. Tokens never expire.
Free
1 scan per month
- 1 free scan every month
- Auto card identification
- Market pricing
- Shareable reports
Tokens
1 token = 1 scan, never expire
- 5 tokens for £2.99
- 15 tokens for £6.99
- 40 tokens for £14.99
- Everything in Free
Grade Pass
or £49.99/year (40% off)
- Unlimited scans
- Grading history
- Collection tracker
- Everything in Free + Tokens
EARN FREE TOKENS: SHARE A REPORT (+1) · FIRST SCAN (+2 BONUS) · INVITE A FRIEND (+2) · LOG PSA RESULT (+1)
Be first to grade when
the beta opens.
Sign up now to get early access. We need collectors who can compare AI predictions against real PSA results to help us fine-tune accuracy before launch.