KAI Tutor

AI foreign-language tutor

Free · In-App Purchases

Stuck on a question? Your AI tutor explains it in your language, and you can keep asking until it clicks. Lessons and a study plan at your level. Free for 30 days. KAI Tutor is an AI foreign-language tutor that builds a personal study path for language exams such as TOEIC, TOEFL, IELTS and EIKEN. ■ Exams covered Lessons are pitched at the level each exam actually tests. • English: TOEIC, TOEFL, IELTS, EIKEN, PTE, Duolingo English Test, CELPIP, OPIc, CET-4/6, Cambridge English (KET / PET / FCE / CAE / CPE) • Japanese: JLPT • Chinese: HSK, TOCFL • Korean: TOPIK • Spanish: DELE, SIELE • French: DELF / DALF, TCF, TEF • German: Goethe-Zertifikat, TestDaF, telc • Italian: CILS, CELI, PLIDA • Portuguese: CELPE-Bras, CAPLE ■ Test Drive, no sign-up Tap Test Drive on the sign-in screen to try a lesson without an account. Available in English, Japanese, Chinese, Korean, Spanish, French, German, Italian and Portuguese, with more languages on the way. ■ Diagnose first, then plan A placement test measures listening, reading, grammar, vocabulary, writing and speaking on the CEFR scale. Tell it your goal and it writes a phased, week-by-week plan. Details like how much time you have can be added in chat later, and the plan adjusts. ■ Every lesson sits just above your level Grammar, vocabulary, reading, listening and speaking, one block at a time. Accuracy and time spent shape the difficulty and length of the next lesson. Words and grammar points due for review are woven into lessons before you forget them. ■ Miss a question, get it explained in your language Explanations come in your language. Still unsure? Ask the tutor right there — "why an, not the?", "why would, if it's the future?" — and keep asking until it clicks. The mistake notebook keeps the question, the answer, the why and the whole conversation, with one more practice question on tap. ■ Listening and speaking Listening uses natural multi-speaker dialogues. Speaking records you reading aloud and scores pronunciation and intonation (recordings are scored, not stored). ■ Progress you can see A six-skill radar, phase completion, study days, streaks and badges. Parents get a weekly report and a PIN-protected guardian space. ■ Price Everything is free for the first 30 days. After that, KAI Tutor Plus continues your learning (¥1,800 per month or ¥20,000 per year; local prices as shown in the App Store). About subscriptions • KAI Tutor Plus is an auto-renewing subscription (1 month / 1 year). • Payment is charged to your Apple ID account at confirmation of purchase. • The subscription renews automatically at the same price unless cancelled at least 24 hours before the end of the current period. • Manage or cancel any time in Settings › Apple ID › Subscriptions on your iPhone. • Terms of Use: https://yansuntrigluon.github.io/trigluon-pages/terms.html • Privacy Policy: https://yansuntrigluon.github.io/trigluon-pages/privacy.html

Ratings & Reviews

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• Quicker setup: just your name, languages, current level and goal — tap to pick a language • New Feedback option: send us a note and screenshots right from the app • New "Translate passage" and "Explain" buttons in the follow-up chat — select any text, then tap Explain • Next on the result page moved away from Send to prevent mis-taps • The keyboard no longer covers the question or explanation (including after rotating an iPad) • Listening questions in the mistake notebook now play their audio • Multi-speaker listening dialogues no longer collapse into one voice • More exams supported: PTE, Duolingo English Test, CELPIP, OPIc, CET-4/6, TOCFL, TEF

Version 1.1.0

The developer, TRIGLUON, K.K., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Contact Info
    • User Content
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Size
42.8 MB
Category
Education
Compatibility
Requires iOS 16.4 or later.
  • iPhone
    Requires iOS 16.4 or later.
  • iPad
    Requires iPadOS 16.4 or later.
Languages
English and 2 more
  • English, Japanese, Simplified Chinese
Age Rating
4+
In-App Purchases
Yes
  • KAI Tutor Plus (Yearly) 999,00 kr
  • KAI Tutor Plus (Monthly) 89,00 kr
  • Learn More
Provider
TRIGLUON, K.K.
  • TRIGLUON, K.K. has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
  • DUNS Number
    694762147
  • Address
    〒277-0022
    Chiba KASHIWA 1-27, IZUMICHO
    S.I.N.DAI1 BLDG. 4F404
    Japan
  • Phone Number
    +81 471379503
  • Email
    kai@trigluon.ai
Copyright
© 2026 TRIGLUON, K.K.
  • Developer Website
  • Privacy Policy

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