Kotrin

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Score7.3

Rank#3 of 25

From$7.50/mo

Free planYes

Runs onAndroid, iOS, macOS, Windows

Summary

Kotrin is an AI-powered Japanese-learning app with connected lessons for speaking, listening, reading and writing, organized around JLPT levels. Its library advertises more than 5,000 lessons from beginner through advanced. Learners can work on everyday exchanges set in places such as shops and cafés, or practice through AI role-play conversations. The app covers hiragana through Jōyō kanji, including stroke-order and recognition exercises. It adapts lesson difficulty, content and scenarios to a learner profile, and its AI content system can build lessons from a word or idea. Kotrin is available for Android, iOS, macOS and Windows, though its language interface is currently English only. A free plan includes selected lessons, personalized learning, quizzes and vocabulary practice, with daily practice limits. Pro options are listed at 10.00 USD per month, tax excluded, 90.00 USD per year, tax excluded, and 1650.00 JPY per month. The listed subscriptions renew automatically unless cancelled.

Who it is for

Kotrin suits learners studying Japanese through JLPT-aligned material, conversation practice and kana or kanji exercises. Its free plan may suit learners who are comfortable with daily practice limits.

What is good

More than 5,000 JLPT-aligned lessons
Practices all four language skills
AI role-play for everyday conversations
Teaches hiragana through Jōyō kanji
Adapts lessons to learner progress

What to know first

Free plan has daily practice limits
Currently available only in English
Paid purchases are non-refundable under stated terms

Verdict

Kotrin combines structured JLPT lessons with adaptive practice and AI conversation. Check the daily limits on the free plan and the listed subscription terms before choosing a Pro option.

Kotrin plans and pricing

All plans

Free Free selected lessons · personalized learning · quizzes and vocabulary practice kotrin.jp · 30 Sept 2026

Pro monthly (Terms) $10/mo monthly; tax excluded subscription plan · auto-renews unless cancelled kotrin.jp · 30 Sept 2026

Pro yearly $90/yr yearly; tax excluded subscription plan · auto-renews unless cancelled kotrin.jp · 30 Sept 2026

Pro ¥1,650/mo monthly all lessons · unlimited practice · advanced conversation practice kotrin.jp · 30 Sept 2026

Compared on AI language learning apps

Free plan: Yeskotrin.jp
Adaptive lessons: Yeskotrin.jp
AI conversation practice: Yeskotrin.jp
Pronunciation feedback: Yeskotrin.jp
Supported platforms: iOS, Android, macOSkotrin.jp

Facts

Purpose: Kotrin is an AI-powered app designed specifically for Japanese learning.kotrin.jp · 30 Sept 2026
Skills: The app practices speaking, listening, reading, and writing in connected lessons aligned with JLPT levels.kotrin.jp · 30 Sept 2026
Lesson library: Kotrin advertises more than 5,000 beginner-to-advanced JLPT-aligned lessons.kotrin.jp · 30 Sept 2026
Dialogue practice: Learners practice everyday conversations in context, including shops, cafés, and small talk.kotrin.jp · 30 Sept 2026
AI role play: The app provides AI conversation-partner role plays with back-and-forth responses.kotrin.jp · 30 Sept 2026
Kana and kanji: Kotrin teaches hiragana through all Jōyō kanji with stroke-order and recognition practice.kotrin.jp · 30 Sept 2026
Personalization: Kotrin builds a language profile across 1,536 dimensions and adapts difficulty, content focus, and scenarios to progress.kotrin.jp · 30 Sept 2026
Teacher CMS: Its AI-powered Content Management System creates personalized Japanese lessons from any word or idea.kotrin.jp · 30 Sept 2026
Language availability: The app is currently available only in English, with other languages planned for early 2026.kotrin.jp · 30 Sept 2026
Free-plan limit: The terms describe the free plan as having daily practice limits.kotrin.jp · 30 Sept 2026
Payments: Subscriptions are processed through Apple App Store and Google Play Store in-app purchases.kotrin.jp · 30 Sept 2026
Data practices: Kotrin says it does not sell or use data for advertising and does not store or process payment details.kotrin.jp · 30 Sept 2026
Security: The privacy policy says Kotrin uses industry-standard technical and organizational safeguards and that data may be processed internationally.kotrin.jp · 30 Sept 2026
Support: Support is available by email at [email protected].kotrin.jp · 30 Sept 2026
Refunds: The terms state that monthly and yearly purchases are non-refundable and refunds are handled by the App Store or Google Play.kotrin.jp · 30 Sept 2026