Captio AI
🦻 Accessibility + 💻 Productivity App

Hindi live captions and productivity tool for traveling

For deaf and hard of hearing people.

Download for free

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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.

✈️Airports and boarding

At Indira Gandhi International in Delhi or Chhatrapati Shivaji in Mumbai, announcements mix Hindi and English over noisy PA systems. Captio AI captions both languages so you catch every gate change and boarding call.

🚂Train stations and public transport

Indian Railways announces platforms and departures in Hindi, English, and local languages. Captio AI captions ticket counter conversations and platform announcements — however fast the announcer speaks.

🏨Hotels and check-in

A hotel receptionist in Mumbai or Delhi explaining room details, check-out procedures, and local directions in a mix of Hindi and English. Captio AI captions every word so you follow the full check-in exchange.

🗺️Navigating and asking for help

Asking for directions in a busy Delhi market or from a local in Varanasi's narrow lanes. Hindi spoken fast and colloquially — Captio AI captions in real time so you understand the first time.

🛃Customs and immigration

CISF and immigration officers at Indian airports often speak quickly in Hindi. Captio AI captions each question so you respond accurately without misunderstanding a word.

🎭Tours and activities

A guide at the Taj Mahal, the Red Fort, or a Kerala backwater tour delivering fast-paced Hindi commentary. Captio AI captions so you follow the full story behind every site.

Performance

Most accurate and fastest models

Hindi
92.6%

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 a world that announces everything by sound

Captions any spoken exchange in real time

Airport staff, hotel receptionists, taxi drivers, tour guides. Hold the phone toward whoever is speaking and read the captions — in any setting, in any country.

60+ languages — no language barrier

Live Translator captions and translates in real time. They speak their language — you read in yours. For every country, every language, no manual setup between interactions.

Works anywhere with a data connection

Wi-Fi or mobile data. A local SIM or roaming plan keeps Captio AI running in any country — airports, hotels, rural areas, and everywhere in between.

Handles travel environments

Noisy airports, busy stations, echoing hotel lobbies. Captio AI is built for real environments — not quiet controlled rooms. It captions through the ambient noise of travel.

Discreet in any public setting

Hold the phone or place it near the speaker. Captio AI runs quietly and draws no attention — useful in customs, immigration, and any formal travel interaction where discretion matters.

Private by default

Travel conversations — customs declarations, hotel bookings, personal exchanges — are never stored or shared. Audio is processed in real time and discarded immediately.

Hindi

Why Hindi is hard to understand

Retroflex consonants

  • Tongue-back sounds that vanish on the lips
  • Hindi uses retroflex consonants — /ʈ/, /ɖ/, /ɳ/, /ɽ/ — produced with the tongue curled back toward the palate. At an airport counter or train station, these sounds give no visual signal at the lips. A deaf traveler watches the speaker's mouth and sees the same position for 'ta' and 'ṭa', two completely different sounds.

Aspirated pairs

  • Six pairs of stops that look identical
  • Hindi distinguishes unaspirated and aspirated stops across six positions: /p/-/ph/, /b/-/bh/, /t/-/th/, /d/-/dh/, /k/-/kh/, /g/-/gh/. All twelve sounds produce nearly identical lip shapes. A customs officer saying 'baggage' or 'passport' — the aspiration that separates words is entirely invisible to a deaf lip-reader.

Dialect variation

  • Hindi changes city to city
  • The Hindi a traveler encounters in Delhi, Mumbai, Varanasi, or Jaipur sounds markedly different. Mumbaiya Hindi mixes Marathi substrate, Bihari Hindi carries its own vowel quality, and Rajasthani-influenced Hindi drops syllables in casual speech. A single trip across India can present a deaf traveler with several distinct lip-reading challenges.

Fast colloquial speech

  • Rapid reduction in busy travel settings
  • In crowded stations and busy airport queues, Hindi speakers reduce their articulation to match the pace — syllables merge, vowels shorten, and the careful enunciation that aids lip-reading disappears entirely in fast-paced travel interactions.

Hindi-English code-switching

  • Two languages, unpredictable switches
  • Urban India blends Hindi and English constantly — 'aapka boarding pass?' or 'train platform number four pe hai'. A deaf traveler must lip-read across two phonological systems without warning. The code-switch can happen mid-sentence at a check-in counter or in a PA announcement.

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The Challenge

Hearing loss and travel accessibility in India

India carries one of the world's largest hearing loss burdens. According to the World Health Organization, 63 million people in India suffer from a significant auditory loss — around 6.3% of the population. The country's audiometrist-to-population ratio is approximately 1 per 500,000 people, and the speech therapist-to-deaf population ratio stands at around 1 per 200 — figures that reflect the severe shortage of diagnostic and rehabilitation infrastructure for the country's deaf and hard of hearing population.

India's travel infrastructure — airports, railways, and bus terminals — relies almost entirely on audio PA systems for critical passenger information. Indian Railways, the largest rail network in the world by passenger volume, communicates platform changes, delays, and boarding through PA announcements with no standardised real-time visual equivalent. For a deaf traveler navigating a busy terminus in Mumbai or Kolkata, a missed announcement means a missed train with consequences that cascade across an entire journey.

Captio AI captions Hindi speech in real time — whether a platform PA, a ticket counter attendant, or an immigration officer at IGI — so a deaf traveler in India follows every instruction, change, and question without relying on infrastructure that was never built with them in mind.

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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

"Indian Railways PA announcements are fast and the accent varies by state. I missed my train in Chennai because I could not catch the platform change. With Captio AI the announcement appears on my screen immediately. I have not missed a train since."

Priya S. 🇮🇳
priya.s***@gmail.com
Hard of hearing, Mumbai — solo traveler

"Check-in staff at Delhi airport switch between Hindi and English mid-sentence. Captio AI captions both without any switching on my part. The immigration officer's questions come up word for word — I answer confidently every time."

Arjun K. 🇮🇳
arjun.k***@gmail.com
Deaf, Delhi — business traveler

"I was on a tour of Rajasthan and the guide spoke fast local Hindi with Rajasthani colouring. Captio AI captured every word. For the first time on a guided tour I followed the full history — not just the parts I could lip-read."

Meena R. 🇮🇳
meena.r***@gmail.com
Severely deaf, Jaipur — tourist

"Customs officers at international airports speak quickly and formally. I used to smile and nod hoping I had understood correctly. Now I read every question on screen and give an accurate answer. Captio AI changed how confident I feel at borders."

Vikram P. 🇮🇳
vikram.p***@gmail.com
Hard of hearing, Bengaluru — frequent traveler

"Indian Railways PA announcements are fast and the accent varies by state. I missed my train in Chennai because I could not catch the platform change. With Captio AI the announcement appears on my screen immediately. I have not missed a train since."

Priya S. 🇮🇳
priya.s***@gmail.com
Hard of hearing, Mumbai — solo traveler

"Check-in staff at Delhi airport switch between Hindi and English mid-sentence. Captio AI captions both without any switching on my part. The immigration officer's questions come up word for word — I answer confidently every time."

Arjun K. 🇮🇳
arjun.k***@gmail.com
Deaf, Delhi — business traveler

"I was on a tour of Rajasthan and the guide spoke fast local Hindi with Rajasthani colouring. Captio AI captured every word. For the first time on a guided tour I followed the full history — not just the parts I could lip-read."

Meena R. 🇮🇳
meena.r***@gmail.com
Severely deaf, Jaipur — tourist

"Customs officers at international airports speak quickly and formally. I used to smile and nod hoping I had understood correctly. Now I read every question on screen and give an accurate answer. Captio AI changed how confident I feel at borders."

Vikram P. 🇮🇳
vikram.p***@gmail.com
Hard of hearing, Bengaluru — frequent traveler

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FAQ

Frequently asked questions

Navigate confidently in Hindi.

Captio AI is free to start

Download for free

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