Numbers
Dates, time, counters, readings, and the sound changes learners hesitate on.
特訓 Focused Japanese training
Know it.
Without hesitation.
Tokkun turns the mechanical parts of Japanese—readings, forms, counters, pairings, and sound patterns—into fast, reliable recall.
Made for iPhone
Made for Android
No subscription
1 · 1 · 2 · 5
day-one review rhythm
FSRS 6
reviews at the right time
A drill app, deliberately
Japanese has parts you understand—and parts you simply need to own.
Tokkun does not try to be another course or encyclopedia. It isolates the high-friction details that reward repetition, then gives each one a focused card and a clear path to mastery.
Short sessions. Honest progress. No noisy streak pressure. Just the difficult things becoming easier, one review at a time.
Built for muscle memory
One difficult point at a time.
Every library category has its own card recipe, so practice stays precise instead of turning into a vague mixed quiz.
Verb forms
Train directed transformations across sixteen forms—from dictionary to target.
他
Essential pairs
Transitivity, giving and receiving, fixed keigo, and particle collocations.
Adjective forms
Build automatic recall across useful い- and な-adjective transformations.
Special spellings
Katakana patterns and high-frequency readings that do not behave as expected.
Sound & mora
Curated audio practice for common mora and Tokyo pitch-accent trouble spots.
A calmer review loop
Review what is due.
Add only what fits.
Tokkun uses FSRS 6 to schedule each card independently. Due cards always come first; new cards only fill the remaining room in your round. When review debt grows, Tokkun stops adding more.
- 01Choose a narrow scopeCreate up to five active practices, each with its own settings.
- 02Practice in short roundsUse flashcards for light recall or input mode for a stricter test.
- 03Graduate with confidenceAfter two Easy reviews, Tokkun asks whether the card is truly mastered.
Inside Tokkun
Everything stays visible.
01
Your learning state is card-level.
A card remembers its schedule across practices, favorites, and mistake collections.
02
Your study data stays on your device.
No account is required. Practice history and card progress are stored locally.
03
Premium means one purchase.
No subscription. Unlock unlimited practice and remove rewarded-ad credit limits.
Tokkun: Japanese Drills
Practice until hesitation disappears.
Coming to iOS and Android. Questions, feedback, or content corrections are always welcome.
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