Stuck on something, found a bug, or want to push back on a design choice? We read every message.
Most questions are about why a card came back, what "mastered" means, or how units unlock. The Help page walks through all of it.
Read the Help docs →Four answers that cover most questions.
Why do I keep seeing cards I already got right?
That is spaced repetition working. One correct answer is not memory — it is a reading.
What do Again / Hard / Good / Easy actually mean?
Self-assessment grades that change when the card comes back. Grade honestly or the schedule lies to you.
How do units unlock? What is the 90% gate?
A unit unlocks when 90% of the previous unit's cards reach "in review" status. Not full mastery — just enough foundation to build on.
Will I ever get stuck or blocked from advancing?
No. Units unlock one-way. Once you have it, you keep it. What changes is how much older material gets mixed back in.
Full answers on the Help page.
Three things make a bug report actionable.
Signed in? Use the feedback form on your Profile page — it tags your account automatically.
For everything the form doesn't cover — hello@masteryhelp.com. Billing, subscription questions, curriculum suggestions, account recovery.
An AI-powered learning platform for Koine Greek and Biblical Hebrew. Built on spaced repetition, mastery-based progression, and an AI tutor that knows the lesson you're on. Read the mastery philosophy if you want the long version of why we built it this way.