Built around exams
Not a plain word list — tuned to JLPT & TOPIK question types.
Cross the sea, connect words.
Learn JLPT N5–N1 and TOPIK level 1–6 vocabulary the way exams actually test it. SM-2 spaced repetition keeps words in memory, fully offline, anywhere. Korean speakers learn Japanese, Japanese speakers learn Korean — in one app.
01 / PiPi Words
Vocabulary that builds like a voyage
Today's study at a glance
See today's words and your streak right on the home.
Pick a level deck
Choose a JLPT or TOPIK level and start the voyage.
Light, card by card
Flashcards with high-frequency tags and audio playback.
Progress on the map
Levels as islands, progress as a sailing route.
A habit that adds up
Streaks and achievements reward your daily study.
02 / Why PiPi Words
Why PiPi Words
SM-2 spaced repetition
Resurfaces each word right before you forget it.
Two-way Korean–Japanese
Learn Japanese or Korean — both directions, one app.
100% offline
No account required — study even on a plane.