Slovak live captions and productivity tool for lectures
For deaf and hard of hearing people.
coming soon
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Everything you need to follow Slovak lectures
Four tools built for deaf and hard of hearing Slovak speakers.
Follow the lecture as it happens
- Captions appear word by word while the lecturer is still speaking
- Works in lecture halls, seminars, and tutorials
- No setup — place the phone on your desk and start
- Any accent, any pace
For courses in another language
- Captions and translates in real time
- For international students or foreign-language courses
- 60+ languages, no switching
- Follow the lecture in the language you read best
Full transcript to study from
- Record the lecture and upload it for a complete written transcript
- Searchable, copyable, shareable
- Review at your own pace after class
- Works on any lecture recording
Key points extracted automatically
- Important concepts and takeaways pulled from any transcript
- Organised into sections — not one continuous block
- Useful for revision and exam preparation
- Works on any saved lecture transcript
Download for free
Download on theApp StoreEvery situation covered
Designed for the real moments that matter — not just quiet controlled environments.
Large lecture halls at Comenius University Bratislava, Slovak University of Technology, and the University of Prešov — Slovak instruction at full academic pace. Captio AI captions the professor in real time.
Seminars and cvičenia (tutorial sessions) where discussion is in Slovak, often with English scientific terminology. Captio AI handles both without manual switching.
Recorded lectures on university portals (Moodle, AIS) or shared as video files — play on speaker and Captio AI captions whatever is playing in real time.
Study groups reviewing Slovak lecture material in student accommodation. Captio AI captions whoever is speaking.
Lectures from eastern Slovak faculty (Košice, Prešov) whose Slovak carries regional phonological features. Captio AI handles Bratislava standard and eastern Slovak varieties.
Online courses and webinars delivered by Slovak universities in Slovak or English. Captio AI captions any audio source in real time.
Most accurate and fastest models
word accuracy
independent benchmark, 2025
real-time captions
first word appears as you speak
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Built for the pace and pressure of a real lecture
Follow without splitting your attention
Lip-reading and note-taking at the same time is an impossible cognitive load. Captio AI handles the following so you can direct all your attention to understanding what is being said.
Captions while the lecturer is still speaking
Words appear on your screen as they are said — not after the sentence ends. You stay in sync with the lecture rather than always being a beat behind.
Works in any lecture setting
Lecture halls, seminar rooms, online classes, study groups. Place the phone on your desk, point it toward the audio source, and Captio AI handles the rest.
A full transcript to study from
Record the lecture and upload it to Audio Transcription after class. Get a complete written record you can search, annotate, and revise from — at your own pace.
60+ languages
For international students, students studying abroad, or courses taught in a second language. Captio AI captions or translates in real time with no manual setup.
No advance notice needed
Official university captioning requires booking in advance and is not available for every session. Captio AI works for any lecture, any time, with no prior arrangement.
Why Slovak is hard to understand
Vowel length distinction
- Slovak short and long vowels change meaning — the distinction is invisible on the lips
- Like Czech, Slovak has phonemically distinct short and long vowels across all five vowel qualities. Long vowels are marked in writing with an acute accent (á, é, í, ó, ú) but produce no visible difference in lip shape compared to their short counterparts. In a Bratislava lecture hall, vowel length carries word meaning throughout the session but leaves no visual trace that a deaf student can follow.
Palatal lateral ľ
- Slovak ľ is a palatal lateral — it looks like plain /l/ on the lips
- Slovak has a palatal lateral /ʎ/ written as ľ (distinct from plain /l/). The palatal lateral is produced with the tongue body raised toward the palate — a back-of-mouth distinction that is invisible from the front. In a Slovak lecture, words containing ľ versus l look identical on the lips but differ acoustically.
Syllabic consonants
- Slovak syllabic /r/ and /l/ carry word meaning with minimal lip movement
- Slovak allows syllabic /r/ (written as ŕ) and syllabic /l/ (written as ĺ) to function as vowels in words with no other vowel sounds. These consonants produce minimal lip movement compared to vowels. In a Slovak lecture, words built on syllabic consonants arrive with brief, consonant-only lip contacts and no open-mouth vowel.
Eastern-Western dialect split
- Eastern Slovak (Košice) and Western Slovak (Bratislava) differ in vowel quality and word shape
- Eastern Slovak has preserved different reflexes of historical vowels from Western Slovak, resulting in different vowel qualities for the same standard written words. A deaf student calibrated to Bratislava standard Slovak finds Košice or Prešov faculty delivering vowel shapes they do not recognise from the written standard.
Czech-Slovak boundary zone
- Slovak universities near Czech borders draw bilingual students whose Slovak carries Czech influence
- Slovakia and Czechia share high mutual intelligibility, and universities near the Czech border draw students whose Slovak phonology carries Czech influence. For a deaf student, the boundary zone creates a shifting target: the same academic content is delivered in slightly different phonological realisation depending on the lecturer's background.
Download for free
Download on theApp StoreHearing loss across Slovakia — in a system where sign language services are not systematically funded
The Slovak Union of the Deaf and Hard of Hearing has operated since 1991 (originally as the Slovak Union of Hearing Impaired) and has been a full member of the European Union of the Deaf since 2005. The Association of the Deaf of Slovakia operates regional centres providing social counselling and interpreting services — but hearing aids are not provided free of charge and interpreter services are not systematically funded through the state in the way that applies in Scandinavia or Germany.
Slovak Sign Language has historically lacked the full statutory recognition afforded to sign languages in most Western European countries. During the COVID-19 pandemic, deaf and hard of hearing Slovaks relying on lip-reading reported a complete loss of accessible communication when masks were mandated — a situation documented by Slovak disability advocates and reported in Slovak media. The pandemic episode highlighted how fragile the existing communication access infrastructure is for those who rely on lip-reading rather than sign language.
Slovak universities operate under anti-discrimination law and are required to provide reasonable accommodation for students with disabilities. In practice, deaf students at Comenius University or the Slovak University of Technology must individually request support, and the pool of Slovak academic interpreters for specialist fields is limited. Captio AI captions Slovak lecture speech in real time — in a Bratislava lecture hall or a Košice seminar room — handling standard and eastern Slovak varieties without prior institutional arrangement.
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
"Slovak vowel length changes word meaning and looks the same on the lips for short and long vowels. Captio AI captures the duration acoustically. Bratislava lectures are accessible now."
"Technical Slovak has syllabic /r/ in words with no vowels. Almost nothing to track on the lips. Captio AI gets every consonant-only word right. Engineering lectures make sense."
"Eastern Slovak vowels are different from Bratislava standard. I grew up with western Slovak lip-reading. Captio AI handles both varieties. Košice lectures are accessible."
"No systematic captioning at Prešov. Captio AI captions every lecture in real time on my phone. I don't need to arrange anything in advance."
"Slovak vowel length changes word meaning and looks the same on the lips for short and long vowels. Captio AI captures the duration acoustically. Bratislava lectures are accessible now."
"Technical Slovak has syllabic /r/ in words with no vowels. Almost nothing to track on the lips. Captio AI gets every consonant-only word right. Engineering lectures make sense."
"Eastern Slovak vowels are different from Bratislava standard. I grew up with western Slovak lip-reading. Captio AI handles both varieties. Košice lectures are accessible."
"No systematic captioning at Prešov. Captio AI captions every lecture in real time on my phone. I don't need to arrange anything in advance."
Download for free
Download on theApp StoreFrequently asked questions
Follow every lecture in Slovak.
Captio AI is free to start
coming soon
Download for free
Download on theApp Store