Sentence practice is where retention actually happens. 语境学习。
Flashcards build recognition. Sentences build production. There's a meaningful gap between knowing what 意思 means and using it in a sentence you construct yourself under pressure. That gap is where I kept failing.
Standard apps either drill you on sentences full of unknown words, or they let you look everything up — which isn't practice, it's cheating. I wanted something that felt like a real exam: sentences built only from vocabulary I'd actually studied, graded on meaning, not exact wording.
“I kept seeing 看 and 说 in sentences with words I'd never encountered. That's not practice. That's guessing dressed up as learning.”
A practice loop designed around how retention actually works.
Only words you know
Every AI-generated sentence is constrained to your personal vocabulary set. No surprises.
Natural grading
Your answer is scored semantically. Paraphrasing counts. Exact match is not the goal.
Tracks what sticks
Words you miss surface more often. Words you nail fade into the background. Automatic.
Built with Next.js, Supabase, and the Claude API for sentence generation and grading.