Czech live captions and productivity tool for phone & video calls
For deaf and hard of hearing people.
coming soon
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Download on theApp Store
Everything you need to follow Czech phone & video calls
Four tools built for deaf and hard of hearing Czech speakers.
Follow the call in real time
- Captions appear word by word as the other person speaks
- Works on any call — no app integration required
- Put the call on speaker and point the microphone toward it
- Handles compressed call audio accurately
International and foreign-language calls
- They speak their language — you read in yours
- Translates in real time as they speak
- 60+ languages, no setup
- For family abroad, international business, or travel
Transcribe any call recording
- Record the call and upload for a complete written transcript
- Review instructions, information, and decisions after
- Organised by speaker
- Works on any call recording
Key information extracted from any call
- Important points pulled from any call transcript
- Useful for medical calls, customer service, and work calls
- Organised into clear sections
- Works on any saved recording
Download for free
Download on theApp StoreEvery situation covered
Designed for the real moments that matter — not just quiet controlled environments.
A call with family in Brno or Ostrava whose Moravian or Silesian Czech sounds different from the Prague standard you grew up with. Captio AI captions in real time so you follow the conversation without asking them to change how they speak.
A work call with colleagues in Prague or a client video call in formal Czech. Put the call on speaker, point Captio AI toward the audio, and follow every discussion without losing the thread to consonant clusters or missed syllables.
A callback from your praktický lékař (GP), the hospital outpatient line, or the pharmacist — rapid medical Czech with clinical vocabulary and appointment details. Captio AI captions every word so nothing high-stakes is missed.
A call from your bank (Česká spořitelna, Komerční banka, ČSOB) or a utility company — automated menus in Czech, formal agents, and fast-spoken account information. Captio AI captions whatever the speaker says.
A call from Czech diaspora family in Germany, Austria, or Slovakia, or from Slovak family where Slovak and Czech mix naturally. Live Translator handles any language transitions so distance is never an additional barrier.
A video call on Teams, WhatsApp, or Skype — the standard tools for Czech remote work and family catch-ups across the country and diaspora. Captio AI listens through the speaker and captions in real time alongside the video feed.
Most accurate and fastest models
word accuracy
independent benchmark, 2025
real-time captions
first word appears as you speak
Download for free
Download on theApp Store
Built for the calls you have been avoiding
Captions as they speak
Words appear on screen word by word while the other person is still talking. You read what they say at the same pace everyone else hears it — no delay, no reconstruction.
Works on any call app
Captio AI does not need to integrate with any platform. Put the call on speaker, point the microphone toward the audio, and read the captions. It works the same way for any app on any device.
No more asking for repeats
Every word is on screen as it is said. If you missed something, glance at the caption rather than interrupting the call — the full sentence is there.
Handles call audio accurately
Compressed phone audio is less clean than in-person speech. Captio AI is built for real-world audio conditions, including the reduced quality of standard phone and VoIP calls.
Any language
For calls with family abroad, international colleagues, or foreign-language customer service. Live Translator captions and translates in real time with no manual setup.
Record and review after
Record any call and upload it to Audio Transcription. Get a full written record of everything said — useful for medical instructions, work decisions, and anything worth having in writing.
Why Czech is hard to understand
Consonant cluster density
- Czech has some of the densest consonant clusters in Europe
- Czech allows syllabic consonants and clusters so dense that words like 'zmrzl' (he froze) consist of five consecutive consonants with no vowel at all. In fast phone conversation, these clusters compress further — a hard of hearing caller trying to parse the audio receives a rapid sequence of sounds with almost no vowel anchor to identify word boundaries.
The ř phoneme
- No other European language has a sound like Czech ř
- The Czech phoneme ř — a raised alveolar fricative trill /r̝/ — exists in no other European language. It is produced with the tongue tip against the alveolar ridge while simultaneously producing friction, a position that from the outside looks identical to other dental consonants. For a hard of hearing caller relying on any visual cue or partial acoustic signal, ř blends completely into the surrounding consonant landscape.
Regional dialect gap
- Prague and Silesian Czech sound like different languages
- Czech has nine dialects spanning Bohemia, Moravia, and Silesia. Moravian dialects use different vowel realizations, distinct intonation patterns, and vocabulary that differs from Prague Czech. Silesian dialects further incorporate Polish phonological influence. A caller from Ostrava sounds so different from a Prague speaker that even hearing Czech speakers comment on the gap.
Vowel length distinction
- Long and short vowels sound different but look the same
- Czech marks vowel length as a meaning distinction — 'rada' (advice) vs 'ráda' (gladly); 'dul' (he blew) vs 'důl' (mine). The acoustic difference is clear but the visual lip configuration is nearly identical. On a phone call with degraded audio, a hard of hearing person cannot distinguish pairs that differ only in vowel duration.
Hard/soft consonant pairs
- Palatalized and non-palatalized consonants look identical
- Czech distinguishes hard, neutral, and soft consonants — 'ty' vs 'ti', 'dy' vs 'di' — with the soft variants marked by palatalization produced by raising the tongue body. This distinction is entirely invisible on the lips. In Czech, a change in palatalization changes both the grammar and the meaning, but that change is acoustically subtle and visually zero.
Download for free
Download on theApp StoreHalf a million Czechs live with disabling hearing loss, supported by a system still catching up
Applying the GBD 2019 global prevalence rate of approximately 5 percent for disabling hearing loss to the Czech Republic's population of around 10.9 million yields an estimated 545,000 people with significant hearing difficulty. Czech Sign Language (Český znakový jazyk) was legally recognised in 2008 under Act No. 384/2008 Coll. on Communication Systems for Deaf and Deafblind Persons — making the Czech Republic one of the later EU members to extend this recognition. Recognition created a legal framework, but provision of professional sign language interpreting in medical, legal, and administrative settings remains inconsistent across regions outside Prague.
For deaf and hard of hearing Czechs, phone calls represent a particular gap. Healthcare, banking, government services, and employment notifications are still primarily phone-based in the Czech system, with limited alternatives for those who cannot follow spoken audio. The Czech healthcare system makes significant use of telephone callbacks for test results, referral notifications, and prescription renewals — calls where missing a word about a dosage or a specialist referral has direct health consequences. Deaf and hard of hearing patients report that navigating these calls without support frequently requires involving a hearing third party.
Captio AI captions every Czech phone call in real time — so whether it is a callback from a Prague clinic, a family call from Brno, or a work call in fast professional Czech, the words appear on screen as they are spoken.
Download for free
Download on theApp StoreWhat 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.
Private by default
Download on theApp StoreCaptio AI supports 60+ languages
People love Captio AI
"The hospital always calls back in rapid formal Czech and I miss half of it. With Captio AI I read every word the nurse says — appointment times, which department, what to bring. I do not have to call back and ask someone to explain it again."
"Brno Moravian Czech is noticeably different from Prague Czech. Apps that work fine in Prague sometimes struggle with Brno. Captio AI handles both — I use it for work calls with Prague colleagues and family calls from the village."
"Silesian Czech is fast and the accent is strong. Online tools often completely fail on Ostrava speech. Captio AI gets it right — I was genuinely surprised the first time I used it during a call with my sister."
"Česká spořitelna called about my account and spoke in that fast bank Czech that is almost impossible to follow. With Captio AI I read the whole message and dealt with the issue in one call. No repetition, no frustration."
"The hospital always calls back in rapid formal Czech and I miss half of it. With Captio AI I read every word the nurse says — appointment times, which department, what to bring. I do not have to call back and ask someone to explain it again."
"Brno Moravian Czech is noticeably different from Prague Czech. Apps that work fine in Prague sometimes struggle with Brno. Captio AI handles both — I use it for work calls with Prague colleagues and family calls from the village."
"Silesian Czech is fast and the accent is strong. Online tools often completely fail on Ostrava speech. Captio AI gets it right — I was genuinely surprised the first time I used it during a call with my sister."
"Česká spořitelna called about my account and spoke in that fast bank Czech that is almost impossible to follow. With Captio AI I read the whole message and dealt with the issue in one call. No repetition, no frustration."
Download for free
Download on theApp StoreFrequently asked questions
Follow every call in Czech.
Captio AI is free to start
coming soon
Download for free
Download on theApp Store