Pokémon Grading App Accuracy

Final dataset · 30 cards · 5 apps · vs. actual TAG grades

⚠️ Foilsnap excluded — only graded one side of cards, producing unreliable repeated scores.

Top 3 apps by accuracy (MAE — lower is better)

Full accuracy summary

MAE by app (lower = better)

Bias by app (positive = over-graded, negative = under-graded)

Per-card detail