§ 01
Real JLPT readiness
Vocab, kanji, and grammar mapped against official JLPT word lists — not just card counts. See what percentage of N5 through N1 you actually know, broken down by app.
§ 02
Combined streak
One streak across all your tools. Studied in WaniKani today? That counts. In Anki? That counts too. Your real study consistency, not each app's isolated view.
§ 03
Vocab gap list
See which JLPT words aren't in any of your decks yet. Click to view all unknown words for any level — then add them to whichever app makes sense.
§ 04
Exam countdown & pace
Set your JLPT exam date. JStacked calculates how many weeks to 80% readiness at your current pace — and tells you when you'll get there.