Everything you need
to fix your mistakes.
Instant Capture
Save a question the moment you miss it — screenshot, paste, or type. No fields required.
0
Questions this week
Progress Over Time
Watch your retest success rate climb as mastered questions add up week over week.
Mistake Breakdown
See exactly how content, reasoning, and misread errors split across every section.
Private By Design
Your questions stay stored right on your device — nothing to sync, nothing to configure.
Mastery Score
One number that tracks how much of your mistake bank you've actually mastered.
Every question follows a simple lifecycle
No manual review queue to manage — questions move through these four stages on their own.
Just captured. Not reviewed yet.
You've gone back over it once.
Scheduled to resurface for another attempt.
Retested correctly — you've got it.
Know exactly why you missed it
Every mistake gets classified into one of six causes — so "I keep messing up biochem" becomes something you can actually act on, like "I keep misreading passage details."
See mistake breakdownsDidn't know, remember, or understand the required content.
Knew the content but reasoned through the question incorrectly.
Misread or overlooked something in the question, passage, graph, table, or choices.
Rushed, spent too long, or otherwise mismanaged time.
Math, unit, equation, or arithmetic error.
Changed an answer, second-guessed, overthought, or chose poorly.
Frequently asked questions
Start turning mistakes into points
Log your first missed question in under a minute — it's completely free.
Start Tracking Mistakes