Captio AI
🦻 Accessibility + 💻 Productivity App

Ukrainian live captions and productivity tool for lectures

For deaf and hard of hearing people.

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Captio AI app showing live captions

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Use Cases

Every situation covered

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

🏛️Large lecture halls

Taras Shevchenko National University of Kyiv, Lviv Polytechnic, Kharkiv National University lecture halls — in Ukraine and wherever Ukrainian universities continue operating remotely. Place the phone on the desk facing the speaker. Captio AI captions from any location.

🔬Seminars and tutorials

Ukrainian university seminars where students present and debate in academic Ukrainian, often online. Captio AI captions whoever is speaking so you follow every argument without asking for repeats.

💻Online and recorded lectures

Recorded Ukrainian lectures on university portals, Zoom sessions, or YouTube academic channels. Put the recording on speaker and point Captio AI at the audio for accurate captions in real time.

📚Study groups

Study groups across Ukraine and in refugee communities in Poland, Germany, and the UK — fast conversational Ukrainian mixed with English. Captio AI follows whoever is speaking.

🌍Foreign-language and international courses

Ukrainian students in English-medium programmes abroad, or international students following Ukrainian-medium courses. Live Translator captions in real time so language is not the access barrier.

🎤Guest speakers and public talks

Visiting academics and diaspora Ukrainian speakers from North America, Europe, and Australia. Captio AI handles standard Ukrainian, western varieties, and eastern surzhyk-influenced delivery.

Performance

Most accurate and fastest models

Ukrainian
91.5%

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 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.

Ukrainian

Why Ukrainian is hard to understand

Hard-soft consonant contrast

  • Ukrainian distinguishes hard and soft (palatalized) versions of most consonants — all visually identical on the lips
  • Ukrainian has 33 phonemic consonants, including hard-soft (palatalized) pairs throughout the system. The soft consonant is produced with the body of the tongue raised toward the hard palate — a movement entirely inside the mouth. On the lips, hard /t/ and soft /tʲ/ look identical. In a Ukrainian lecture, hard-soft contrasts carry grammatical meaning (case endings, verb conjugations, noun classes) throughout every sentence, and all of them are invisible.

Ukrainian apostrophe

  • The Ukrainian hard sign (ʼ) before soft vowels marks a non-palatalization that produces no visible lip difference
  • Ukrainian uses an apostrophe (ʼ) before certain soft vowels (я, є, ї, ю) to indicate that the preceding consonant does not palatalize: пʼять (five) vs пять (palatalized cluster). This distinction changes both phonology and meaning, but produces no visible difference in lip movement. In a lecture, these apostrophe-marked words appear throughout and are entirely invisible to a lip-reader.

Surzhyk code-mixing

  • Eastern Ukrainian surzhyk — a Russian-Ukrainian mixed variety — changes the phonological system mid-sentence
  • Surzhyk is a pervasive Russian-Ukrainian mixed speech used across eastern Ukraine (Kharkiv, Dnipro, Zaporizhzhia) and in many families displaced by the war. Russian and Ukrainian differ in significant phonological ways — Ukrainian has /ɦ/ (voiced glottal fricative) where Russian has /g/ (voiced velar stop), Ukrainian has /i/ where Russian has /ɨ/, and vowel qualities differ throughout. In a university lecture from a speaker with surzhyk background, the phonological system shifts within sentences, making lip-reading calibration impossible.

Ukrainian /ɦ/ vs Russian /g/

  • Ukrainian's distinctive /ɦ/ (voiced glottal fricative) contrasts with Russian /g/ — and war displacement has mixed both populations in universities
  • Ukrainian has /ɦ/ (the letter г, a voiced glottal fricative, as in 'he' in English but voiced) where Russian has /g/ (a velar stop). This is one of the most salient phonological differences between the two languages. In post-war Ukrainian universities, students and lecturers from eastern regions who grew up with Russian or surzhyk produce /g/ in positions where western speakers produce /ɦ/ — creating phonological variation across a single lecture hall.

Academic Slavonic register

  • Ukrainian academic lectures use a formal register dense with Church Slavonic and Latinate terminology — phonologically remote from everyday speech
  • Ukrainian academic language draws on Church Slavonic vocabulary and Latin-origin terminology in a way that diverges significantly from colloquial speech. A deaf student who lip-reads everyday conversational Ukrainian encounters different phonological profiles when the professor shifts to formal academic register — with longer, multisyllabic words and consonant clusters from Slavonic or Latin roots.

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The Challenge

Ukraine's deaf community displaced by war — navigating university without captioning infrastructure on two continents

The WHO European Region estimates approximately 190 million people across Europe have some hearing loss — 20% of the population. Ukraine, with a pre-war population of approximately 44 million, carried a proportionate share. Ukraine's national disability registration system documented hundreds of thousands of people with hearing-related disability before the 2022 full-scale invasion. The conflict has dramatically disrupted the deaf community's access to education, rehabilitation, and social services: universities have relocated, students have been displaced across Europe, and the infrastructure that existed for deaf and hard of hearing students — already limited — has been disrupted.

Ukrainian Sign Language (Українська жестова мова, UZhM) exists as a community language but has limited formal institutional support. Before the war, Ukrainian universities did not systematically provide real-time captioning in ordinary lectures. For deaf and hard of hearing Ukrainian students now studying remotely from Poland, Germany, the Czech Republic, or the UK, the challenge is compounded: they follow lectures conducted in Ukrainian — a phonologically demanding language with hard-soft consonant pairs, surzhyk variation, and formal academic register — in an environment with no captioning infrastructure and no in-person institutional support.

War displacement has also created a new mixed linguistic context in Ukrainian universities. Students who grew up in eastern Ukraine with surzhyk or Russian-dominant backgrounds are now enrolled alongside western Ukrainian students in institutions where standard western Ukrainian is the medium of instruction. For deaf students trying to lip-read in this environment, the phonological variation is substantial — and all of it occurs without any captioning.

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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

"Lviv Polytechnic lectures in western Ukrainian have many hard-soft contrasts I can't lip-read. Captio AI captions every consonant pair correctly. I follow lectures completely for the first time."

Oksana K. 🇺🇦
oksana.k***@gmail.com
Hard of hearing, Lviv

"I'm following my Kyiv university remotely from Poland. Captio AI captions the Ukrainian lectures streamed over Zoom. Being displaced hasn't stopped my education."

Dmytro S. 🇺🇦
dmytro.s***@gmail.com
Deaf student, Warsaw (displaced)

"My professor has an eastern surzhyk background — Ukrainian mixed with Russian phonetics. Captio AI handles it. I follow the full lecture even when the phonological system shifts mid-sentence."

Iryna B. 🇩🇪
iryna.b***@gmail.com
Hard of hearing, Berlin (displaced)

"Kharkiv National University lectures have eastern Ukrainian phonology — different /г/ and vowel quality from Kyiv standard. Captio AI handles Kharkiv Ukrainian accurately. No gaps in my transcript."

Vasyl H. 🇺🇦
vasyl.h***@gmail.com
Hard of hearing, Kharkiv

"Lviv Polytechnic lectures in western Ukrainian have many hard-soft contrasts I can't lip-read. Captio AI captions every consonant pair correctly. I follow lectures completely for the first time."

Oksana K. 🇺🇦
oksana.k***@gmail.com
Hard of hearing, Lviv

"I'm following my Kyiv university remotely from Poland. Captio AI captions the Ukrainian lectures streamed over Zoom. Being displaced hasn't stopped my education."

Dmytro S. 🇺🇦
dmytro.s***@gmail.com
Deaf student, Warsaw (displaced)

"My professor has an eastern surzhyk background — Ukrainian mixed with Russian phonetics. Captio AI handles it. I follow the full lecture even when the phonological system shifts mid-sentence."

Iryna B. 🇩🇪
iryna.b***@gmail.com
Hard of hearing, Berlin (displaced)

"Kharkiv National University lectures have eastern Ukrainian phonology — different /г/ and vowel quality from Kyiv standard. Captio AI handles Kharkiv Ukrainian accurately. No gaps in my transcript."

Vasyl H. 🇺🇦
vasyl.h***@gmail.com
Hard of hearing, Kharkiv

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FAQ

Frequently asked questions

Follow every lecture in Ukrainian.

Captio AI is free to start

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