JLPT N5–N4 · Medical Japanese · Cultural

learn japanese the way you actually learn.

Two adaptive tracks, JLPT-aligned curriculum, spaced repetition, and furigana powered by on-device morphological analysis — from your first kana to clinical Japanese.

In development · coming soon to
Coming soon to theApp Store
Coming soon toGoogle Play
No ads · OAuth sign-in · Your progress, privately yours
Built for serious progress

A curriculum, not a game.

Everything is sequenced against real JLPT and clinical certification goals — no points-for-the-sake-of-points.

JLPT & Medical paths

N5→N4 general Japanese and M5→M4 clinical Japanese for healthcare professionals, plus cultural modules.

FSRS spaced repetition

A modern scheduling algorithm decides exactly when to review each item so it sticks — efficiently.

Smart furigana & lookup

On-device Japanese tokenization renders accurate readings and tap-to-define dictionary lookups on any sentence.

Task-based scenarios

Practice real situations — keigo register, clinical handovers — with guided, pre-authored TBLT tasks.

See how Rikai Sensei teaches — FSRS, TBLT & more →

One app, two ways to learn

Express or Immersive.

Choose the depth that fits your life. Switch any time — your progress follows you.

Express

Efficient & focused

For the time-pressed learner
  • Streamlined lessons, lighter explanations
  • Same essential vocabulary, kanji & grammar
  • Designed around the minutes you actually have
  • Clear, calm, distraction-free
Immersive

Deep & rigorous

For the dedicated student
  • Full pedagogical depth & nuance
  • FSRS-tuned review scheduling
  • Detailed grammar, pitch & register analysis
  • Built for JLPT and certification mastery
For healthcare professionals

Clinical Japanese, taught as its own language.

The Medical track (M5–M4) teaches the register, keigo hierarchy, and precise vocabulary a Japanese clinical setting demands — original curriculum you won't find in any general course.

Explore the Medical track →

Simple, honest pricing

Start free. Upgrade when ready.

No ads. No dark patterns. Cancel anytime — renewal terms always visible.

Free
$0
Forever
The foundation — enough to truly begin.
  • Kana + N5 Phase 1 (28 core objectives)
  • Medical M5 Module 1 sample
  • 2–3 TBLT scenarios per category
  • Unlimited SRS reviews
Coming soon
Most popular
Plus
$9.99/mo $79.99/yr
or $79.99/yr — 4 months free
The complete early-to-intermediate journey.
  • Everything in Free
  • Full N5 (Phases 2–3) + full N4
  • Full Medical M5 (all modules)
  • Full TBLT library (N5–N4)
  • Both tracks, switch anytime
Coming soon
Premium
$19.99/mo $149.99/yr
or $149.99/yr — best value
Advanced clinical Japanese now — plus every level still to come.
  • Everything in Plus
  • Medical M4 — advanced clinical Japanese
  • All TBLT scenarios, every level
  • Future levels (JLPT N3–N1, Medical M3–M1) as released — no price rise
  • Priority support
Coming soon

USD pricing shown. Final price varies by region and currency, displayed in your app store at checkout.

A calm place to study

Designed with restraint.

A refined interface drawn from Japanese craft — every screen earns its place, nothing shouts.

Learning path
(screenshot)
Kanji deep-dive
(screenshot)
SRS review
(screenshot)
Questions

Good to know.

Yes — the Free tier gives you foundational N5 lessons, the dictionary, furigana, and core spaced-repetition reviews, with no time limit and no ads.
Express is streamlined and time-efficient with lighter explanations; Immersive offers the full pedagogical depth with FSRS-tuned review. Same essential content — you pick the depth, and can switch any time.
Yes. The Medical path (M5–M4 available now, higher levels in development) teaches clinical Japanese language — register, keigo hierarchy, handovers and documentation — for healthcare professionals working in Japan.
The Medical track is a five-rung ladder that mirrors the JLPT levels: M5 is foundational clinical language (~N5), M4 is full ward and clinic communication (~N4), M3 adds diagnostic reasoning and specialized communication (~N3), M2 covers specialist and systems language (~N2), and M1 is advanced clinical mastery (~N1). M5 and M4 are available now; M3–M1 are in active development and roll out to existing subscribers as released.
Each level is built against Japan’s published syllabi for foreign healthcare workers — JFT-Basic and the 介護日本語評価試験 at entry, the JLPT N4/N3 visa thresholds, and the 介護福祉士 and 看護師 national exams at the top — so the language taught matches what those gates test. It is original, human-reviewed curriculum designed around register and clinical safety, and it teaches Japanese language, not clinical practice. The alignment focuses your study; it is not a guarantee of any exam result.
You sign in with a trusted OAuth provider; your learning data is private to your account. See our Privacy Policy and data-deletion options in the footer.