Captio AI
🦻 Accessibility + 💻 Productivity App

Bengali live captions and productivity tool for restaurants & cafes

For deaf and hard of hearing people.

Download for free

Download on theApp Store
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.

🍽️Dinner with friends

A noisy restaurant in Dhaka or a fish and rice lunch in Chittagong — friends talking fast in colloquial Bangladeshi Bengali, animated and overlapping. Captio AI captions each speaker across the table in real time.

💼Business lunches

A business lunch in a Dhaka corporate restaurant or a Kolkata professional meeting over food — Bengali with English terms mixing in, where catching every detail matters. Captio AI follows the full exchange.

Cafe catch-ups

A tea and snack catch-up at a Dhaka café or a Kolkata adda — ambient background noise, intimate but rarely quiet. Captio AI captions whoever is speaking so a deaf person can contribute at the right moment.

🌍Restaurants abroad

Dining at a Bengali restaurant abroad — in London, New York, or the Gulf — where waitstaff speak a mix of Bengali and English. Live Translator bridges any remaining gap in real time.

🎂Celebrations and group meals

A Eid gathering, a wedding dinner, or a family celebration at a restaurant — many people, elevated noise, and conversations running in parallel. Captio AI makes the celebration followable from first dish to last.

❤️Dates and one-on-one meals

A one-on-one lunch or date where conversation matters — Bengali across a small table in a busy city restaurant. Captio AI lets you follow every exchange naturally without making the accommodation conspicuous.

Performance

Most accurate and fastest models

Bengali
93.7%

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 table — however noisy the room

Follows the person across the table

Point the microphone toward the person speaking and Captio AI captions them through the background noise. You do not need to face them, watch their lips, or lean in.

Works through restaurant noise

Restaurant noise averages 80 dBA — well above comfortable conversation level. Captio AI is built for these real environments, not quiet controlled rooms.

Place it and forget it

Put the phone on the table between you and the other person, microphone facing them. You glance at it as needed. No adjusting between sentences, no managing the setup.

No asking for repeats during the meal

Every word appears in real time. If you missed something, the caption is there — you do not need to stop the conversation and ask anyone to say it again.

Any language

For restaurants abroad, multilingual dining companions, or waitstaff who speak a different language. Live Translator captions and translates in real time with no manual setup.

Discreet

A phone on a restaurant table is unremarkable. Captio AI runs quietly, the screen faces you, and most dining companions adapt naturally once they understand what it does.

Bengali

Why Bengali is hard to understand

Aspirated consonant pairs

  • Aspiration invisible across a restaurant table
  • Bengali has a full series of aspirated consonants — /kh/, /gh/, /ch/, /jh/, /ṭh/, /ḍh/, /th/, /dh/, /ph/, /bh/ — each paired with an unaspirated counterpart. The aspiration is produced by a burst of air after the closure, invisible on the lips. At a busy Dhaka or Kolkata restaurant table, these minimal pairs are indistinguishable by sight alone.

Eastern vs Western dialect gap

  • Bangladesh and West Bengal Bengali sound very different
  • Eastern Bengal (Bangladeshi) Bengali and Western Bengali (Kolkata) differ significantly in phonology. Crucially, eastern dialects despirate — aspirated consonants lose their aspiration entirely in casual speech — while southern dialects retain them. A deaf lip-reader switching between a Bangladeshi speaker and a Kolkata speaker at the same table encounters two different phonological systems.

Retroflex vs dental contrast

  • Two consonant series that look the same on the lips
  • Like Hindi, Bengali distinguishes retroflex consonants (tongue curled back) from dentals (tongue against teeth). This contrast is produced entirely behind the lips. At a restaurant table, 'ṭ' and 't', 'ḍ' and 'd' look identical from the front, making large numbers of Bengali minimal pairs visually indistinguishable.

Fast casual vowel reduction

  • Vowels reduce at conversational pace
  • Spoken Bengali reduces unstressed vowels aggressively in fast casual speech. The deliberate pronunciation of a word in formal Bengali may have two or three clearly distinguishable vowel movements; at restaurant conversation speed, the reduced vowels merge and the word's visual envelope changes.

Bengali-English code-switching

  • English enters mid-sentence in urban settings
  • In urban Dhaka, Chittagong, and Kolkata, Bengali-English code-switching is the default register in educated dining settings. Restaurant conversations mix English nouns, professional terms, and phrases mid-sentence. For a deaf lip-reader tracking Bengali, an English phrase arrives with no visible signal that the phonological system has changed.

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The Challenge

Hearing loss in Bangladesh and Bengal: the scale of daily exclusion

Approximately 9.6% of Bangladesh's population — around 13.7 million people based on 2011 census data — are deaf or hard of hearing. A broader survey found that hearing loss of any degree is present in 34.6% of the Bangladeshi population, with profound hearing loss in 1.2% (1.7 million people). In rural areas, hearing difficulties affect 16.5% of the population and reach 32.2% among people aged 60 and over. In India's West Bengal and Bengali-speaking communities, comparable prevalence data situates the total Bengali-speaking deaf and hard-of-hearing population well into the tens of millions.

Support infrastructure for deaf people across Bangladesh is critically underdeveloped. There is limited public provision of sign language interpreters, and most deaf Bangladeshis navigate social settings — including restaurants and family gatherings — without any structured communication support. Research on hearing loss and social dining published in 2024 found that people with hearing loss disengage from restaurant dining at significantly higher rates, a pattern that is especially pronounced where no accessibility support exists and where asking to repeat is a social cost most people prefer to avoid.

Captio AI captions Bengali conversation in real time, so a deaf or hard-of-hearing person can follow a family dinner in Dhaka, a restaurant gathering in Chittagong, or a professional lunch in Kolkata without asking others to slow down or repeat.

Download for free

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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

"Restaurant dinners in Dhaka are loud and the conversation moves fast — colloquial Bengali with English mixed in. Captio AI follows the whole mix. I actually know what is being talked about now."

Tasnim R. 🇧🇩
tasnim.r***@gmail.com
Dhaka, moderate bilateral hearing loss

"Chittagong Bengali is different from Dhaka Bengali and both are hard to lip-read. Captio AI handles both. Family lunches in the city feel completely different now."

Arif H. 🇧🇩
arif.h***@gmail.com
Chittagong, deaf since age 10

"Adda at a Kolkata restaurant — fast West Bengali, opinionated, everyone talking at once. I put Captio AI on the table and caught the whole conversation for the first time."

Priya D. 🇮🇳
priya.d***@gmail.com
Kolkata, sensorineural hearing loss

"Bengali restaurant in Brick Lane with family — fast Sylheti Bengali, mixed with English. Captio AI follows every switch. I finally feel part of the meal rather than just present at it."

Imran K. 🇬🇧
imran.k***@gmail.com
London diaspora, bilateral hearing loss

"Restaurant dinners in Dhaka are loud and the conversation moves fast — colloquial Bengali with English mixed in. Captio AI follows the whole mix. I actually know what is being talked about now."

Tasnim R. 🇧🇩
tasnim.r***@gmail.com
Dhaka, moderate bilateral hearing loss

"Chittagong Bengali is different from Dhaka Bengali and both are hard to lip-read. Captio AI handles both. Family lunches in the city feel completely different now."

Arif H. 🇧🇩
arif.h***@gmail.com
Chittagong, deaf since age 10

"Adda at a Kolkata restaurant — fast West Bengali, opinionated, everyone talking at once. I put Captio AI on the table and caught the whole conversation for the first time."

Priya D. 🇮🇳
priya.d***@gmail.com
Kolkata, sensorineural hearing loss

"Bengali restaurant in Brick Lane with family — fast Sylheti Bengali, mixed with English. Captio AI follows every switch. I finally feel part of the meal rather than just present at it."

Imran K. 🇬🇧
imran.k***@gmail.com
London diaspora, bilateral hearing loss

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FAQ

Frequently asked questions

Have a real conversation through the noise in Bengali.

Captio AI is free to start

Download for free

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