Captio AI
🦻 Accessibility + 💻 Productivity App

Tamil live captions and productivity tool for tv & media

For deaf and hard of hearing people.

Download for free

Download on theApp Store
Captio AI app showing live captions

Download for free

Download on theApp Store
Use Cases

Every situation covered

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

📺Live TV — news, sport, events

Sun TV and Tamil news channels run live bulletins and debates that pre-generated captions cannot keep up with — and live news is exempt from India's captioning rules anyway. Point Captio AI at your TV and read the Tamil as it is spoken.

🎬Streaming content

Sun NXT, aha Tamil, and other platforms vary in subtitle quality and availability. Captio AI works as a consistent fallback for any Tamil show or film that ships with wrong, delayed, or missing captions.

📱YouTube and social media

YouTube auto-captions for Tamil are often inaccurate and most social video has none. Point Captio AI at your phone and read accurate Tamil captions for any clip.

🌍Foreign-language content

A foreign film, a foreign documentary, a non-Tamil channel. Live Translator captions and translates in real time so anything becomes watchable in Tamil as it plays.

🎭Cinema

Not every cinema showing is captioned. Hold Captio AI near the audio and read real-time Tamil captions of the Kollywood dialogue discreetly from your seat.

🎧Podcasts and audio content

Most Tamil podcasts have no transcript. Hold Captio AI near the audio or upload a recording, and read the whole episode in writing.

Performance

Most accurate and fastest models

Tamil
90.4%

word accuracy

independent benchmark, 2025

< 200ms
you speak
captions

real-time captions

first word appears as you speak

Download for free

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Captio AI in everyday use
Why Captio AI

Built for the content that subtitles fail

Captions any content in real time

Point the phone toward any speaker — TV, laptop, tablet, cinema screen. Captio AI captions whatever is playing, regardless of whether that platform provides subtitles.

Faster than built-in subtitles for live content

Pre-generated subtitles lag behind live TV by several seconds. Captio AI captions in real time — so you read what is being said as it is being said.

Works on any screen or device

No integration required. Point the phone toward the audio source — the same approach works for a large TV, a laptop screen, a cinema, or a phone held at arm's length.

Any language, translated in real time

For foreign-language content, switch to Live Translator. It translates as content plays — so a French film, a German documentary, or a Japanese series all become watchable.

No subtitle file needed

Captio AI captions from the audio directly. No subtitle file, no platform support, no creator requirement. If audio plays, Captio AI can caption it.

More accurate than auto-generated captions

The industry average for AI-generated subtitles is a 10–15% word error rate — roughly 1 in 10 words wrong (3Play Media). Captio AI is built for accuracy in real-world audio conditions.

Tamil

Why Tamil is hard to understand

Literary–spoken diglossia

  • News Tamil and serial Tamil are two varieties
  • Tamil is deeply diglossic: news and formal programming use centamil, the formal literary variety, while serials and films use colloquial koduntamil. A deaf viewer who lip-reads everyday Tamil meets a news read in a register with different verb forms and vocabulary, so familiar words take unfamiliar shapes on screen.

Retroflex series

  • A full set of tongue-curl sounds invisible on screen
  • Tamil has a complete retroflex series — ʈ, ɖ, ɳ, ɭ, ɻ — made by curling the tongue back. From a distant TV or a small phone these give no lip cue, so a deaf viewer sees the same shape for dental, alveolar, and retroflex sounds that make different words in a scene.

Multiple rhotics and laterals

  • Sounds English lacks, hard to tell apart on screen
  • Tamil distinguishes several r-like and l-like sounds — including retroflex ones — that look nearly identical on the lips. In a fast serial or a Kollywood song sequence, the fine distinctions that separate two words are exactly the ones a deaf viewer cannot recover from a face.

Colloquial reduction

  • Casual Tamil elides consonants and nasalises vowels
  • In fast spoken Tamil, intervocalic consonants drop, clusters simplify, and vowels nasalise. During a lively serial or a comedy scene the careful enunciation gives way to reduced, run-together speech that offers a deaf viewer little visual footing.

Tamil–English code-switching

  • English dropped into Tamil content
  • Tamil serials, films, and YouTube mix English terms into Tamil constantly, especially urban content. A deaf viewer must switch to English phonology on the key words, then back to Tamil, with no visual warning and no lip to read after a fast cut.

Download for free

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The Challenge

India mandates some captions — but not for Tamil's live TV and cinema

India carries one of the world's largest hearing loss burdens: the World Health Organization estimates 63 million people in India have significant auditory loss, and Tamil is spoken by tens of millions across Tamil Nadu and Sri Lanka. Following the Rights of Persons with Disabilities Act of 2016, the government has moved to require every TV channel to run at least one programme a week with subtitles or captioning.

But the rules leave out most of what a Tamil viewer actually watches. Live news, debates, reality shows, and award shows are explicitly exempted, and the baseline — one captioned programme a week — is a fraction of a channel's output. Tamil cinema is one of India's largest film industries, yet captioned showings are rare; the daily serials on Sun TV, streaming films, and the constant Tamil–English mixing of urban content are largely uncaptioned or inconsistently so.

Captio AI does not depend on the broadcaster or the platform. Point the phone at any screen — a live Tamil news debate, a Sun TV serial, a Kollywood film — and read Tamil captions in real time, in the variety actually being spoken, whether or not that content was ever captioned.

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

"Kollywood films rarely have captioned showings, and the dialogue mixes in English. I hold Captio AI on my knee and read the lines from my seat. I stopped waiting for a subtitled home release to watch a film."

Karthik R. 🇮🇳
karthik.r***@gmail.com
Hard of hearing, Chennai — cinema-goer

"Sun TV serials rarely have good captions and the retroflex sounds are invisible on the lips. Captio AI captions the actual dialogue from the audio, in real time. I follow the whole story now."

Meena S. 🇮🇳
meena.s***@gmail.com
Deaf, Coimbatore — serial viewer

"Sri Lankan Tamil news has no captions and the news register is different from everyday Tamil. Captio AI captions it in real time from the audio. I read the news as it is read."

Suresh K. 🇱🇰
suresh.k***@gmail.com
Hard of hearing, Colombo — live news viewer

"Tamil YouTube auto-captions are a mess and the diglossia trips me up anyway. Captio AI captions any clip accurately from the audio. It covers exactly the content the platforms do not."

Divya M. 🇮🇳
divya.m***@gmail.com
Deaf, Chennai — YouTube viewer

"Kollywood films rarely have captioned showings, and the dialogue mixes in English. I hold Captio AI on my knee and read the lines from my seat. I stopped waiting for a subtitled home release to watch a film."

Karthik R. 🇮🇳
karthik.r***@gmail.com
Hard of hearing, Chennai — cinema-goer

"Sun TV serials rarely have good captions and the retroflex sounds are invisible on the lips. Captio AI captions the actual dialogue from the audio, in real time. I follow the whole story now."

Meena S. 🇮🇳
meena.s***@gmail.com
Deaf, Coimbatore — serial viewer

"Sri Lankan Tamil news has no captions and the news register is different from everyday Tamil. Captio AI captions it in real time from the audio. I read the news as it is read."

Suresh K. 🇱🇰
suresh.k***@gmail.com
Hard of hearing, Colombo — live news viewer

"Tamil YouTube auto-captions are a mess and the diglossia trips me up anyway. Captio AI captions any clip accurately from the audio. It covers exactly the content the platforms do not."

Divya M. 🇮🇳
divya.m***@gmail.com
Deaf, Chennai — YouTube viewer

Download for free

Download on theApp Store
FAQ

Frequently asked questions

Watch anything in Tamil.

Captio AI is free to start

Download for free

Download on theApp Store