Everything you need tomaster vocabulary
From live transcription to spaced repetition flashcards — a complete pipeline for turning lessons into long-term memory.
Live Transcription
实时转录
Real-time speech-to-text for both you and your tutor. Perfect speaker identification, instant results.
100% Accurate Speaker ID
Our stereo audio architecture means we always know who's speaking. No machine learning guessing — deterministic identification based on audio channels.
Dual Audio Capture
Captures both your microphone and your tutor's audio from screen sharing or tab audio. Works with any video call platform.
Immediate Results
Missed that word during class? Transcripts appear as you speak so you don't miss a beat!
Mandarin + English
Built for Mandarin and English tutoring in both directions, including natural code-switching between the two.
Smart Vocabulary Detection
智能词汇识别
AI automatically catches words you ask about during lessons. No more scrambling to take notes.
Automatic Detection
When you ask "what does X mean?" or your tutor explains a new word, our AI detects it and adds it to your queue.
One-Click Definitions
Highlight any word in your transcript to get instant definitions, pronunciation support, and example sentences — in Mandarin or English.
Vocabulary Queue
Review AI-suggested words after your lesson. Accept what's useful, skip what you know.
Multiple Sources
Words come from starred definitions, AI suggestions, document imports, and manual additions — all in one place.
老师说：这是一个很好的投资机会，对经济有帮助。
AI Lesson Summaries
AI课程总结
After each lesson, AI generates a comprehensive summary with key topics, vocabulary covered, and progress insights. Never lose track of what you learned.
Automatic Generation
As soon as your lesson ends, AI analyzes the transcript and generates a structured summary with key takeaways.
Vocabulary Highlights
See all new words covered in the lesson at a glance. Quickly add any to your flashcard deck.
Speaking Metrics
See your speaking time breakdown and track topics covered in each lesson.
Complete Lesson Archive
Every lesson is saved with full transcripts. Go back to any lesson to review or extract vocabulary.
Spaced Repetition Flashcards
间隔重复闪卡
Turn vocabulary into long-term memory with scientifically optimized review intervals.
SRS Algorithm
Based on proven spaced repetition research. Cards appear at optimal intervals — just before you'd forget them.
Smart Flashcards
Cards adapt to whether you are studying Mandarin or English. Reveal pronunciation, definitions, translations, and example sentences after the prompt — and the algorithm rotates the prompt direction as you build recall.
Mastery Tracking
Visual progress through Learning → Familiar → Mastered tiers. Watch your retention rate climb.
Audio Pronunciation
High-quality text-to-speech for every card. Hear the correct pronunciation as you learn.
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Smart Document-to-Flashcards
智能文档转闪卡
Upload your lesson materials and let AI extract vocabulary to create flashcards automatically. Works with Mandarin or English lesson materials from your tutoring sessions.
AI Extraction
Our AI reads your PDFs and identifies vocabulary words, providing pronunciation support and definitions automatically.
Textbook Support
Works with textbooks, worksheets, and reading materials — any PDF from your Mandarin or English lessons.
Annotation Recognition
Our AI picks up your scribbles too. We just hope that it's legible to the human eye.
Direct to Queue
Extracted vocabulary goes straight to your queue. Review, edit, and convert to flashcards.
Practice Sentences
练习句子
Leave every Mandarin or English lesson with 6–8 curated target sentences — with pronunciation support, translation, and audio — ready for the student to drill.
Suggest with AI
One click turns your lesson transcript into a queue of correction, modelling, and contrast sentences. Accept, reject, edit, reorder.
Pronunciation, translation, audio
Every accepted sentence gets pronunciation support, a translation, and cached audio for practice — whether the target language is Mandarin or English.
Synced with your student
Accepted sentences sync instantly to every assigned student. Students can add their own private sentences alongside the tutor's set.
我每个星期六都会去爬山。
Lesson Replay
课堂重放
AI conversation practice bounded to your lesson's curated sentences — by Live Call or Text. Reinforce the exact phrasing your tutor taught, no generic chatbot drift.
Grounded in your lesson
The AI only drills sentences the tutor accepted, so every rep reinforces what was actually taught.
Live Call or Text
Speak it out loud in a real-time voice call, or type the drill — both rehearse the same curated sentences from your lesson.
Powered by Practice Sentences
Curate your target sentences and they're instantly Replay-ready — every Live Call or Text session drills the phrasing you actually learned.
你周末喜欢做什么运动？
What sports do you like on weekends?
我每个星期六都会去爬山。
很好！再说一次，这次加上 "因为我觉得很放松"。
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