Memory engine that schedules for you
FSRS spaced repetition predicts the moment you are about to forget each word and brings it back right then. Words you keep missing jump the queue automatically.
EARLY ACCESSMade in Vietnam · English & Chinese
The AI language coach for Vietnamese professionals
Learn the English and Chinese your job actually uses: maritime, contracts, IT and logistics. Smart flashcards remember for you, pronunciation is scored sound by sound, and an AI tutor explains every mistake in Vietnamese.
starboard
/ˈstɑːr.bərd/ · mạn phải tàu
s 98t 95ɑːr 91b 94ər 61d 89
Tracks
Maritime · IMO SMCP
Logistics & shipping
Contracts & legal
Business English
Information technology
Medicine
IELTS Academic
TOEIC
Aptitude tests
Chinese HSK
The problem
General apps teach "airport". Your job needs "bunkering".
Vietnamese seafarers, logistics staff and office workers study English for years, then freeze when a pilot, a buyer or a contract uses the words of their trade. Consumer apps are built for tourists, not for work.
What generic apps teach
- apple everyday vocabulary
- ticket travel phrases
- hello greetings & small talk
Explanations in English only, pronunciation checked word by word, if at all.
What PUdayne teaches
- starboard IMO standard marine phrases
- force majeure contract & legal clauses
- freight prepaid logistics collocations
Every word with Vietnamese meaning, IPA, real example sentences and sound-by-sound feedback.
The product
One coach for vocabulary, speaking, reading and writing
Every feature targets a specific weakness Vietnamese learners have when using a foreign language at work.
Pronunciation, sound by sound
Speak into the mic and get a score for every phoneme, plus the exact sound to fix.
AI tutor that explains in Vietnamese
Role-play a port inspection, a job interview or a contract negotiation. The tutor replies, then corrects your sentence and tells you why.
Snap your notebook, get flashcards
Photograph handwritten notes, a textbook page or a contract. Vision AI reads it and builds cards with meaning, IPA, examples and images.
Chinese with real tone feedback
Characters broken into components, stroke order, and tone scoring inside full sentences.
Writing Lab
Write to a prompt and get graded on content, grammar, vocabulary and tone, with a fully corrected version.
Learn while you browse
Chrome and Firefox extension: save any word from any web page straight into your deck.
Early traction
Live and in real use
10,000+flashcard reviews graded
5,800+cards with meaning, IPA & examples
14learning tracks by profession
2languages: English & Chinese
Started in 2025 · early access in Vietnam
How it works
Ten minutes a day, with a system
Pick your goal
Going to sea, signing contracts, an interview or an exam. PUdayne puts the right tracks first.
Review what is due
Flashcards, fill-in-the-blank and typing drills, mixed across tracks in one short daily session.
Get corrected, adapt
Speak and get scored per sound. Write and get a corrected version. Weak spots reshape your next session.
AI roadmap
Where Claude fits in
Today PUdayne uses a small, fast model for word lookup and image reading. The parts that need real reasoning and careful explanation in Vietnamese are where we want to build on Claude.
Current stack
- BackendTypeScript · Fastify · MariaDB
- MemoryFSRS spaced repetition
- SpeechNeural TTS · phoneme & tone scoring
- ClientsWeb app · Chrome/Firefox extension
Rubric grading for Writing Lab
Grade learner writing against a clear rubric and explain each correction in plain Vietnamese, consistently across thousands of essays.
PlannedWorkplace role-play tutor
Long, realistic conversations (port state control, freight negotiation, job interviews) that stay in character and still teach.
PlannedLessons from real documents
Turn a learner's own contract, manual or email into a lesson: key terms, comprehension questions and a reading at their level.
PlannedContent quality checks
Review generated meanings and example sentences before learners see them, so mistakes never become flashcards.
PlannedLearn the language of your job
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