Master Japanese, One Sentence at a Time
Every sentence has exactly one word you don't know yet. Learn it in context, and your vocabulary grows with every session.
Example
彼女は毎朝公園を散歩する。
She takes a walk in the park every morning.
Known wordsNew word
Scheduling by FSRS, the algorithm behind modern Anki.
Every sentence written and translated by humans. Zero AI-generated content.
Aligned with JLPT N5–N1.
Try it: one of these words is probably new to you.
Known wordsNew word
What comes next is FSRS: each word comes back right before you'd forget it. Sign up free.
How It Works
One New Word per Sentence
The sentence around it is built from words you already know. That context is what teaches the new word, no flashcard lists involved.
Spaced Repetition
Words you know well appear less often. Words you're still learning come back at the right time. Less busywork, more remembering.
Zero Configuration
No decks to build. No settings to tweak. The app picks the right sentence at the right time, so you can focus on learning.