Live captions and productivity tool for lectures
For deaf and hard of hearing people.
coming soon
Download for free
Download on theApp Store
Everything you need to follow lectures
Four tools built for deaf and hard of hearing people.
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
Free to start
Download on theApp StoreEvery situation covered
Designed for the real moments that matter — not just quiet controlled environments.
Hundreds of students, a PA system, a lecturer far away. Place your phone on the desk and point it toward the nearest speaker output. Captio AI captions everything clearly from any row.
Small groups, fast discussion, multiple voices. Captio AI follows whoever is speaking so you contribute without losing the thread of the conversation.
Put the lecture on speaker and point Captio AI toward the audio. Captions appear in real time for live streams, recorded videos, and video call tutorials — regardless of the platform.
Group revision sessions, peer discussions, study catch-ups. Captio AI captions whoever is speaking so you follow every argument and contribution without asking for repeats.
Studying abroad or taking a course in a second language. Live Translator captions the lecturer in their language and delivers it in yours — so the language barrier does not become an access barrier.
One-off lectures, visiting professors, public talks on campus. No official captioning, no warning. Captio AI covers any speaker, in any space, without advance notice.
Download for free
Download on theApp StoreBuilt 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.
Download for free
Download on theApp StoreDeaf and HoH students are falling behind — and lectures are why
Only 18% of deaf and hard of hearing students graduate with a bachelor's degree, compared to 33% of hearing students (National Deaf Center). That gap does not exist because deaf and hard of hearing students are less capable. It exists because the lecture — the primary format of university teaching — is built entirely around hearing. Fast speech, no transcripts, no repeats, and a pace set by someone who cannot see whether you are keeping up.
Communication in lectures was identified as the central challenge for deaf and hard of hearing students navigating university, with most reporting significant barriers to understanding spoken content during lectures specifically (Springer, 2025). Only 8% of postsecondary students with hearing loss even disclose their condition to their institution — which means the majority are navigating the gap without any formal support in place (PMC, 2024).
The effort required in a lecture is qualitatively different from what hearing students experience. Following by lip-reading requires constant visual attention. Taking notes requires looking away from the lecturer — which breaks lip-reading. Processing the content requires cognitive bandwidth that is being used up by the act of following. The result is that a deaf or hard of hearing student sits through the same lecture as everyone else and leaves with a fraction of what was said.
Captio AI is built to remove that constraint. Captions appear word by word as the lecturer speaks, so you follow without lip-reading, without splitting attention, without falling behind. Record the lecture and get a full transcript to study from. Nothing missed. Nothing reconstructed. Just the lecture, as it happened.
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
"I was trying to lip-read and take notes at the same time. It was exhausting. Captio AI handles the following — I just focus on understanding."
"My university has no official captioning. Captio AI covers every lecture, every seminar, every guest speaker. I stopped missing things."
"Official captioning only covers some lectures. Captio AI covers everything else — and it is faster and more accurate anyway."
"Italian lectures move fast and professors do not repeat. Captio AI gives me every word, in real time, so I keep up with the same content as everyone else."
"I was trying to lip-read and take notes at the same time. It was exhausting. Captio AI handles the following — I just focus on understanding."
"My university has no official captioning. Captio AI covers every lecture, every seminar, every guest speaker. I stopped missing things."
"Official captioning only covers some lectures. Captio AI covers everything else — and it is faster and more accurate anyway."
"Italian lectures move fast and professors do not repeat. Captio AI gives me every word, in real time, so I keep up with the same content as everyone else."
Download for free
Download on theApp StoreFrequently asked questions
Follow every lecture. Don't miss the point.
Captio AI is free to start
coming soon
Download for free
Download on theApp Store