Captio AI
🦻 Accessibility + 💻 Productivity App

Czech 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

Czech Television and the commercial channels run live news that pre-generated subtitles can lag behind. Point Captio AI at your TV and read the Czech as it is spoken, not several seconds behind the anchor.

🎬Streaming content

iVysílání, Voyo, and Netflix vary in subtitle quality and availability. Captio AI works as a consistent fallback for any Czech show or film that ships with wrong, delayed, or missing captions.

📱YouTube and social media

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

🌍Foreign-language content

A foreign film, a foreign documentary, a non-Czech channel — much of it dubbed into Czech. Live Translator captions and translates in real time so anything becomes watchable as it plays.

🎭Cinema

Not every cinema showing has open captions. Hold Captio AI near the audio and read real-time Czech captions of the dialogue discreetly from your seat.

🎧Podcasts and audio content

Most Czech 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

Czech
90.3%

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.

Czech

Why Czech is hard to understand

Consonant clusters

  • Words that pile up consonants, some with no vowel
  • Czech allows dense consonant clusters and has a syllabic r and l — words like 'prst' or 'vlk' built around consonants with no vowel. On screen these clusters give a lip-reader almost no visual seams, so a deaf viewer cannot break a word into readable pieces.

The ř sound

  • A rare trilled sound unique to Czech
  • Czech has the ř — a raised alveolar trill made by combining a rolled r with a fricative, a sound found almost nowhere else. It produces no distinctive lip shape, so a deaf viewer cannot see it, yet it appears in common words and names on screen.

Vowel length

  • Long and short vowels that change the word
  • Czech vowel length is phonemic — a long vowel makes a different word from a short one. This is a timing distinction, not a lip shape, so on screen a deaf viewer cannot see which of two terms was said.

Soft consonants

  • Palatalized ď, ť, and ň with barely visible cues
  • Czech contrasts plain and soft (palatalized) consonants — ď, ť, ň — where the softening is a tongue-body gesture with almost no visible cue. A deaf viewer sees the same mouth for a plain and a soft consonant that make different words.

Dubbing and mismatched lips

  • Foreign content dubbed into Czech never matches the mouth
  • The Czech Republic dubs most foreign film and TV into Czech, so the words a viewer hears do not match the lips on screen. For a deaf viewer relying on lip-reading, dubbed content is impossible — the mouth is speaking a different language from the soundtrack.

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The Challenge

Czech public TV subtitles most content — but dubs almost everything foreign

Around 1.3 million people in the Czech Republic live with some form of disability, and recent figures record on the order of 167,000 people with hearing impairment, against a European backdrop in which about one in five people has some hearing loss. Public broadcasting sets a baseline: Czech Television is required to subtitle at least 70% of its programmes and provide sign language on a small share.

But the gaps are real. Commercial channels and streaming services carry less deaf-specific subtitling than the public broadcaster; live programming can lag; social and short-video content is largely uncaptioned. Above all, the Czech Republic dubs most foreign film and television into Czech — so a deaf viewer relying on lip-reading gets a mouth that never matches the soundtrack, with no accessible caption on much of it.

Captio AI does not depend on the broadcaster or the platform. Point the phone at any screen — a live Czech Television bulletin, a dubbed foreign series, a YouTube clip — and read Czech captions in real time from the audio, whether or not that content was ever captioned.

Download for free

Download on theApp Store
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

"Foreign films are dubbed into Czech, so the lips never match the sound. Captio AI captions the Czech soundtrack from the audio. For the first time I can watch a dubbed film and follow it."

Petr N. 🇨🇿
petr.n***@gmail.com
Hard of hearing, Prague — foreign-film viewer

"Czech Television captions well but the commercial channels and streaming barely do, and the clusters give me no seams to lip-read. Captio AI captions the dialogue from the audio. I follow everything now."

Tereza K. 🇨🇿
tereza.k***@gmail.com
Deaf, Brno — streaming viewer

"Live news subtitles lag and the ř and soft consonants are invisible. Captio AI captions it in real time from the audio. The words finally line up with the picture."

Jakub S. 🇨🇿
jakub.s***@gmail.com
Hard of hearing, Prague — live news viewer

"Czech YouTube auto-captions mangle the clusters. Captio AI captions any clip accurately from the audio. It covers exactly the content the platforms do not."

Lucie M. 🇨🇿
lucie.m***@gmail.com
Deaf, Brno — YouTube viewer

"Foreign films are dubbed into Czech, so the lips never match the sound. Captio AI captions the Czech soundtrack from the audio. For the first time I can watch a dubbed film and follow it."

Petr N. 🇨🇿
petr.n***@gmail.com
Hard of hearing, Prague — foreign-film viewer

"Czech Television captions well but the commercial channels and streaming barely do, and the clusters give me no seams to lip-read. Captio AI captions the dialogue from the audio. I follow everything now."

Tereza K. 🇨🇿
tereza.k***@gmail.com
Deaf, Brno — streaming viewer

"Live news subtitles lag and the ř and soft consonants are invisible. Captio AI captions it in real time from the audio. The words finally line up with the picture."

Jakub S. 🇨🇿
jakub.s***@gmail.com
Hard of hearing, Prague — live news viewer

"Czech YouTube auto-captions mangle the clusters. Captio AI captions any clip accurately from the audio. It covers exactly the content the platforms do not."

Lucie M. 🇨🇿
lucie.m***@gmail.com
Deaf, Brno — YouTube viewer

Download for free

Download on theApp Store
FAQ

Frequently asked questions

Watch anything in Czech.

Captio AI is free to start

Download for free

Download on theApp Store