Kotrin
Ranked in AI Language Learning Apps ·Free plan· paid from $7.50/mo
About
Kotrin is an AI-powered app for learning Japanese through connected practice in speaking, listening, reading, and writing, with lessons aligned to JLPT levels. Its library advertises more than 5,000 beginner-to-advanced lessons. Learners can practice everyday exchanges set in places such as shops and cafés or hold back-and-forth conversations with AI role-play partners. The app teaches hiragana through Jōyō kanji with stroke-order and recognition practice. It adapts difficulty, topics, and scenarios using a language profile, and its AI content system can create personalized lessons from a word or idea. Kotrin is listed for Android, iOS, macOS, and Windows, though its interface is currently available only in English. The Free plan offers selected lessons, personalized learning, quizzes, and vocabulary practice, with daily practice limits. Pro options are listed at 10.00 USD per month and 90.00 USD per year, both tax excluded, as well as 1650.00 JPY per month. Purchases go through Apple App Store or Google Play; monthly and yearly purchases are non-refundable under the stated terms.
Who it is for
Kotrin suits English-speaking learners seeking structured Japanese practice across JLPT-aligned lessons and conversation exercises. Its daily limits on the free plan and in-app subscription terms are worth considering.
What is good
- More than 5,000 advertised JLPT-aligned lessons.
- Practice covers speaking, listening, reading, and writing.
- AI role plays support back-and-forth conversation.
- Personalization adapts difficulty and scenarios.
- Teaches hiragana through Jōyō kanji.
What to know first
- The app is currently available only in English.
- Free plan has daily practice limits.
- Paid purchases are non-refundable under the stated terms.
- Pro prices include tax-excluded USD options.
Verdict
Kotrin offers broad Japanese practice, from JLPT-aligned lessons to AI role plays and kanji exercises. The English-only interface and free-plan daily limits may matter when evaluating fit.
Compared on AI language learning apps
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
Company
- Founded
- 2022kotrin.jp · 28 Sept 2026
- Headquarters
- Tokyo, Japankotrin.jp · 28 Sept 2026
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Where it ranks on Inferse
Sources
- kotrin.jp/en· checked 30 Sept 2026
- kotrin.jp/en/product/how-it-works· checked 30 Sept 2026
- kotrin.jp/en/product/cms· checked 30 Sept 2026
- kotrin.jp/ja/terms· checked 30 Sept 2026
- kotrin.jp/ja/privacy· checked 30 Sept 2026
- kotrin.jp/en/contact· checked 30 Sept 2026