Preparing your learning path…
Preparing your learning path…
AIko gives you one level-matched lesson at a time. A single story becomes Vocabulary + Kanji, Grammar, Reading, Listening, and Speaking practice, while your activity updates mastery automatically and helps shape what comes next.
Currently focused on Japanese.
Mastery stays in the background
No separate Review stage is required after the lesson.
The current learning loop
Learners do not browse a catalog for the next standard lesson. AIko assigns one suitable lesson, keeps its language connected across all six phases, records learning evidence automatically, and uses that evidence for future targeting.
You receive one level-matched assignment instead of browsing a lesson catalog. Your learning evidence helps AIko keep targeting language that still needs practice.
The story introduces the situation, vocabulary, kanji, and grammar that the rest of the lesson will keep reusing.
Story, Vocabulary + Kanji, Grammar, Reading, Listening, and Speaking reinforce the same lesson context instead of behaving like separate exercises.
After grammar practice, adaptive English-to-Japanese translation asks you to actively use the lesson grammar plus reinforcement patterns when available.
Answers, reveals, translations, listening activity, and speaking attempts become learning evidence in the background. There is no separate Review stage to complete.
Your level and learning evidence guide future targeting, helping AIko decide which language needs more attention in later lessons.
Adaptation grounded in practice
AIko uses evidence created inside the lesson to update progress and help target future lessons. Mastery is recorded automatically instead of being presented as a separate learner-facing Review phase.
Grammar also includes adaptive English-to-Japanese translation, so production can contribute evidence instead of relying only on recognition questions.
Learning evidence may include
The lesson journey
Every phase keeps the same story context. Grammar contains its own adaptive translation practice, so Translation is part of Grammar rather than a seventh phase. Standalone Review is not part of the learner journey.
Understand the lesson situation and meet the target language in context.
Practise the useful words and focus kanji that appear in the lesson.
Learn the target patterns, answer grammar questions, then use Japanese in adaptive translation practice.
Recognise the same language again in text and answer from meaning and context.
Follow the lesson language in audio and build recognition without changing topics.
Use the microphone to turn familiar lesson language into spoken Japanese.
Free and Premium
Free keeps the core six-phase learning path. Premium adds the capabilities that the current subscription screen actually unlocks: custom-topic generation, extended speaking, and deeper learning insights.
The core AIko learning path for Japanese.
¥20,000 / year
More control over lesson generation, speaking, and learning insights.
Premium checkout is not connected yet, so the app cannot charge you from the subscription page today. The current planned options are ¥2,000/month or ¥20,000/year; beta Premium access can be assigned administratively.
Meet the founder
AIko is being created by Logan, an independent AI researcher and language learner in Japan. While learning Japanese himself, he kept meeting the same problem: lessons, weak points, and progress were scattered, while general AI tutors did not reliably remember what needed more practice.
That frustration became AIko: one story reused through Story, Vocabulary + Kanji, Grammar, Reading, Listening, and Speaking, with learning evidence and mastery recorded automatically instead of adding a separate Review stage.
Logan leads the learning design, product direction, experiments, and decisions. AI helps him explore, code, test, and refine the app, turning one person's idea into a working product while human judgement stays in charge.
Designed from real frustration. Built through human direction and AI collaboration.
The product is shaped around problems its founder experiences while learning the language himself.
His work explores transformer models, fine-tuning, adaptation, and how AI systems learn.
The product vision and decisions stay human; AI helps turn them into a working app.
Your next Japanese lesson
Begin with one level-matched lesson. AIko keeps the language connected across the whole lesson and uses what you do to help shape what comes next.