Captio AI
🦻 Accessibility + 💻 Productivity App

Vietnamese live captions and productivity tool for job interviews

For deaf and hard of hearing people.

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Captio AI app showing live captions

Download for free

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Use Cases

Every situation covered

Designed for the real moments that matter — not just quiet controlled environments.

👔In-person interviews

In a Hanoi or Ho Chi Minh City office — an interviewer speaking Vietnamese at corporate pace. Captio AI captions every question in real time so you read the full sentence before responding.

💻Video interviews

Zoom or Google Meet — standard for remote first rounds at Vietnamese companies. Put the call on speaker and follow every question in real time whether in Vietnamese or English.

📞Phone screens and initial calls

HR screening calls in Vietnamese — fast, formal, over a mobile line. Captio AI captions the recruiter's voice in real time so compressed audio and tonal speech do not become the barrier.

👥Panel interviews

Panel interviews at large Vietnamese employers, state-owned enterprises, or multinationals. Captio AI follows each panelist in real time even when questions arrive from different directions.

🌍International and foreign-language interviews

For roles at Ho Chi Minh City multinationals where interviews move between Vietnamese and English. Live Translator handles both languages in the same session without manual switching.

🎯Assessment centres

Group exercises and competency presentations — common at large Vietnamese bank and corporate recruitment rounds. Captio AI covers facilitator instructions and participant contributions throughout.

Performance

Most accurate and fastest models

Vietnamese
94.6%

word accuracy

independent benchmark, 2025

< 200ms
you speak
captions

real-time captions

first word appears as you speak

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Captio AI in everyday use
Why Captio AI

Built for the room where a missed word has real consequences

Read the full question before you answer

Every word appears on screen as the interviewer speaks. You read the question completely before responding — nothing guessed, nothing reconstructed.

Works in person and on any call format

In-person interviews, video calls, phone screens. Place the phone on the table or point it toward the audio — Captio AI handles every format.

Discreet by design

The app runs quietly on your phone. Place it on the table or hold it naturally. No explanation needed, no drawing attention to the accommodation.

No asking for repeats

Asking an interviewer to repeat a question signals uncertainty. Captio AI means you never need to — you read it in real time and answer with confidence.

Any language

For international roles, multilingual panels, or interviews conducted in a second language. Live Translator captions and translates in real time so language is never the barrier.

Private by default

Interview conversations are sensitive. Captio AI processes audio in real time and discards it immediately — nothing is stored, nothing is shared.

Vietnamese

Why Vietnamese is hard to understand

Six tones

  • Six different words can look identical on the lips
  • Vietnamese has six lexical tones — flat (ngang), falling (huyền), questioning (hỏi), broken (ngã), sharp rising (sắc), and heavy falling (nặng). Each changes the meaning of the syllable. Like Mandarin, tones are pitch contours produced in the larynx — invisible on the lips. In a formal Hanoi or Ho Chi Minh City interview, a deaf candidate watching the interviewer may see one lip shape where six different words could be intended.

Northern-Southern dialect gap

  • Hanoi and Ho Chi Minh City Vietnamese are phonologically distinct
  • Northern Vietnamese (Hanoi standard) and Southern Vietnamese (Ho Chi Minh City) differ significantly in tone inventory — Northern has six distinct tones; Southern merges some. They also differ in initial consonants: Northern uses /z/ for 'd', Southern uses /j/. An interviewer from Hanoi and one from Ho Chi Minh City produce different lip patterns for the same words, and a deaf candidate trained on one variety faces a different phonological system in the other city.

Sino-Vietnamese register

  • Formal interview Vietnamese uses Hán-Việt vocabulary unknown from everyday speech
  • Formal Vietnamese — used in interviews, official contexts, and business — draws heavily on Sino-Vietnamese (Hán-Việt) vocabulary borrowed from Chinese. Words like 'phỏng vấn' (interview), 'năng lực' (competency), 'kinh nghiệm' (experience) are Sino-Vietnamese. A deaf candidate whose visual vocabulary comes from everyday native Vietnamese words may not recognize formal Hán-Việt register terms.

Vietnamese-English switching

  • Ho Chi Minh City corporate interviews mix Vietnamese and English mid-sentence
  • In Ho Chi Minh City's multinational and tech sector interviews, English terms enter Vietnamese mid-sentence — 'deadline', 'teamwork', 'performance review'. A deaf candidate tracking Vietnamese is suddenly watching English words without warning, and the switch back to Vietnamese may begin with a tonal syllable that looks identical to several others.

Fast syllable timing

  • Vietnamese is syllable-timed — compressed tones stack at interview pace
  • Vietnamese is syllable-timed, meaning each syllable gets roughly equal duration in natural speech. In fast interview speech, tonal syllables stack rapidly with minimal inter-word pause. A lip-reader tracking six-tone distinctions must process each syllable at interview pace with no breath pause to recover.

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The Challenge

Vietnam's disability employment data gap — and what it hides

Vietnam's National Statistical Office conducted its first comprehensive survey on people with disabilities in 2023, acknowledging a serious shortage of reliable data on specific disability groups — particularly those who are deaf or hard of hearing. UNDP Vietnam noted in 2023 that the country has made progress in building inclusive policy frameworks but that implementation is limited by weak data, inconsistent enforcement, and low employer awareness. Research published in PMC on the economic lives of people with disabilities in Vietnam identified discrimination by employers as the single greatest perceived barrier to securing paid employment — more significant than educational gaps or physical access barriers.

Vietnamese disability policy includes legal provisions for employment inclusion, but the interview process remains a structural barrier for deaf candidates. Vietnam has no national captioning standard for the workplace, and sign language interpretation at job interviews is not a legal requirement. Disclosure before an interview may invite discrimination. The formal interview format — including panel discussions at state-owned enterprises and competency assessments at multinationals — is designed around hearing.

The phonological complexity of Vietnamese compounds the practical barrier. Six tones in a fast-paced interview room produce words that look identical on the lips. The Northern-Southern dialect divide means that an interviewer from Hanoi and one from Ho Chi Minh City produce different lip patterns for the same vocabulary. And formal Sino-Vietnamese register uses vocabulary absent from everyday speech. Captio AI requires no employer arrangement: open the app, place the phone on the desk, and every Vietnamese sentence — including tonal distinctions captured in audio — appears in real time.

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Privacy

What you hear stays with you.

Gone the moment it ends

Captio AI processes your audio in real time and discards it immediately. Nothing is recorded. Nothing is kept.

Not a product

Your conversations are not something Captio AI sells, shares, or monetizes — to anyone, for any reason.

Not used to train anything

What you say in a doctor's appointment or a job interview never ends up in a training dataset. Not ours. Not anyone else's.

100% PRIVATE

Private by default

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Reviews

People love Captio AI

"Vietnamese tones in a formal interview — I could never distinguish them from the interviewer's lip movement alone. Captio AI gave me every word from the audio. I answered every question and passed to the final round."

Nguyễn Lan 🇻🇳
nguyen.l***@gmail.com
Moderate hearing loss, Hanoi

"The multinational interview switched between Vietnamese and English. Captio AI followed both. I contributed to the competency exercise and the panel said I was among the strongest candidates."

Trần Minh 🇻🇳
tran.m***@gmail.com
Hard of hearing since childhood, Ho Chi Minh City

"My interviewer used Hanoi Vietnamese. I am from the South. The tones and some consonants are different. Captio AI handled both varieties and I never lost the thread of a question."

Lê Thu 🇻🇳
le.t***@gmail.com
Sensorineural hearing loss, Da Nang

"The phone screening call was in fast Vietnamese with Sino-Vietnamese vocabulary I didn't expect. Captio AI captioned every word. I knew exactly what was asked and passed to the panel stage."

Phạm Hùng 🇻🇳
pham.h***@gmail.com
Progressive hearing loss, Ho Chi Minh City

"Vietnamese tones in a formal interview — I could never distinguish them from the interviewer's lip movement alone. Captio AI gave me every word from the audio. I answered every question and passed to the final round."

Nguyễn Lan 🇻🇳
nguyen.l***@gmail.com
Moderate hearing loss, Hanoi

"The multinational interview switched between Vietnamese and English. Captio AI followed both. I contributed to the competency exercise and the panel said I was among the strongest candidates."

Trần Minh 🇻🇳
tran.m***@gmail.com
Hard of hearing since childhood, Ho Chi Minh City

"My interviewer used Hanoi Vietnamese. I am from the South. The tones and some consonants are different. Captio AI handled both varieties and I never lost the thread of a question."

Lê Thu 🇻🇳
le.t***@gmail.com
Sensorineural hearing loss, Da Nang

"The phone screening call was in fast Vietnamese with Sino-Vietnamese vocabulary I didn't expect. Captio AI captioned every word. I knew exactly what was asked and passed to the panel stage."

Phạm Hùng 🇻🇳
pham.h***@gmail.com
Progressive hearing loss, Ho Chi Minh City

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FAQ

Frequently asked questions

Hear every question in Vietnamese.

Captio AI is free to start

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