Kotrin
AI-powered Japanese learning with adaptive lessons and conversation practice.
At a glance
- Editor score6.2 / 10
- PricingFree plan
- Best forJapanese learners wanting broad practice modes
- Free planYes
- AI conversation practiceYes
- Founded2022 · Tokyo, Japan
- Facts checked20 Sep 2026
Where it wins
- Covers speaking, listening, reading, writing, grammar, and script practice
- Adaptive lessons, quizzes, and AI tutor cards tailor practice over time
- Available on Windows, macOS, iOS, and Android
Where it doesn't
- Focused on Japanese rather than multiple languages
- Free access includes selected lessons, not the full course
- Pro pricing adds cost for unlimited practice and advanced conversations
Our verdict on Kotrin
Kotrin is an AI-powered Japanese language-learning app for beginners through advanced learners. It combines adaptive lessons with practice in speaking, listening, reading, writing, grammar, vocabulary, and Japanese scripts. Learners can work on hiragana, katakana, and kanji writing, follow real-world dialogue audio and scenarios, and use AI role-play conversations. The app is a strong fit for Japanese learners who want several practice modes in one product rather than a narrow vocabulary or conversation tool.
Its breadth is the main attraction. The learning system adapts content, difficulty, and practice scenarios based on learner progress and interactions. AI quizzes identify weak areas, while the AI tutor provides explanations and custom practice cards. Grammar and sentence-pattern training add structure, and conversation practice extends beyond isolated exercises. This combination gives learners multiple ways to reinforce the same language, including script work and audio-based scenarios. Pro adds full access to all lessons, unlimited practice across all features, and more advanced conversation practice. The published pricing lists Pro at ¥1,650 per month.
Kotrin also has a practical platform range, with versions for Windows, macOS, iOS, and Android. Its limitation is focus: the product is designed specifically for Japanese, so it is not suited to learners seeking a broader language catalog. The free plan includes selected lessons, personalized learning, quizzes, and vocabulary practice, while learners wanting the complete feature set need Pro. Choose Kotrin if you want structured Japanese study across all four core skills, script practice, and AI-guided conversation. Consider an alternative if you need multiple languages or prefer a narrower tool dedicated to one learning activity.
Kotrin pricing
All 2 Kotrin plans and prices →
Kotrin fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Adaptive lessons | Yes |
| AI conversation practice | Yes |
| Pronunciation feedback | Yes |
| Human tutoring | Not verified |
| Offline access | Not verified |
| Supported platforms | iOS, Android, macOS |
| Deployment | Desktop, Mobile |
| Platforms | Windows, macOS, iOS, Android |
| Support | |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan (source) |
| Website | kotrin.jp |
| Facts checked | 20 Sep 2026 |
Alternatives to Kotrin
- DuolingoA broad free app covering core language skills with personalized review and mobile access.—
- BusuuA structured language app combining guided lessons, native-speaker feedback, and AI practice.3.8
- MondlyA broad language-learning app combining structured lessons, AI conversations, and offline study.4.8
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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