Error log
What you keep getting wrong
Not a score — a diagnosis. Every question you’ve missed, grouped by the specific reasoning error behind it, so you can fix the habit instead of re-reading the topic.
Pacing
How long each answer took, not just whether it was right — a slow correct answer and a rushed wrong one are both worth knowing about before the real clock is running.
Kept in this browser only. It doesn’t follow you to another device, and clearing site data clears it — the honest trade for a log that needs no account.