Captio AI
🦻 Accessibility + 💻 Productivity App

Persian live captions and productivity tool for restaurants & cafes

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.

🍽️Dinner with friends

Dinner with family in Iran — shared ghormeh sabzi, tahdig, and kubideh kebab — is a long social meal where conversation is constant and fast. A hard of hearing person at a Persian family table needs real-time captions to follow.

💼Business lunches

Business lunches in Tehran tend to be relationship-building affairs. Persian ta'arof embeds real meaning in polite phrasing — missing a sentence can mean misreading the entire social dynamic.

Cafe catch-ups

A quick tea stop at a traditional chaikhaneh or modern café is a daily ritual. Orders and conversation happen fast at the counter, and the background noise of a busy Tehran café adds difficulty.

🌍Restaurants abroad

Travelling and eating out across Iran — from an Isfahani restaurant serving beryani to a northern Caspian coastal fish spot — means navigating regional accents and local varieties. Captio AI captions whatever is spoken.

🎂Celebrations and group meals

Persian celebrations — Nowruz gatherings, birthday parties, and weddings — involve long tables of extended family where conversation overlaps and noise makes lip-reading almost impossible.

❤️Dates and one-on-one meals

A one-on-one dinner at a quieter Tehran restaurant carries the social weight of sustained Persian conversation. Missing a sentence — especially the turn-final verb where meaning accumulates — creates a gap that captions prevent.

Performance

Most accurate and fastest models

Persian
89.1%

word accuracy

independent benchmark, 2025

< 200ms
you speak
captions

real-time captions

first word appears as you speak

Download for free

Download on theApp Store
Captio AI in everyday use
Why Captio AI

Built for the table — however noisy the room

Follows the person across the table

Point the microphone toward the person speaking and Captio AI captions them through the background noise. You do not need to face them, watch their lips, or lean in.

Works through restaurant noise

Restaurant noise averages 80 dBA — well above comfortable conversation level. Captio AI is built for these real environments, not quiet controlled rooms.

Place it and forget it

Put the phone on the table between you and the other person, microphone facing them. You glance at it as needed. No adjusting between sentences, no managing the setup.

No asking for repeats during the meal

Every word appears in real time. If you missed something, the caption is there — you do not need to stop the conversation and ask anyone to say it again.

Any language

For restaurants abroad, multilingual dining companions, or waitstaff who speak a different language. Live Translator captions and translates in real time with no manual setup.

Discreet

A phone on a restaurant table is unremarkable. Captio AI runs quietly, the screen faces you, and most dining companions adapt naturally once they understand what it does.

Persian

Why Persian is hard to understand

Pharyngeal and uvular sounds

  • Arabic-derived consonants produced at the back of the throat
  • Persian uses pharyngeal (عَ /ʕ/) and uvular (غ /ɣ/, ق /q/) consonants borrowed from Arabic — all produced deep in the throat or pharynx with no visible lip movement. These sounds appear in loanwords common in Persian food culture and everyday polite speech. At a restaurant table, a lip-reader sees nothing where these consonants occur.

Tehrani vowel reduction

  • Vowels collapse in fast Tehrani speech
  • Colloquial Tehrani Persian reduces vowels dramatically. Classical Persian has six distinct vowels; in fast casual speech these merge and reduce further. At a Tehran restaurant, what is heard is far more compressed than what any written form would suggest — and a lip-reader working from careful formal Persian is reading a different register.

Iranian vs Dari vs Tajik gap

  • Three national varieties sound different
  • Iranian Farsi, Afghan Dari, and Tajik Persian have distinct vowel systems, intonation patterns, and vocabulary. The vowel shift that changed Classical Persian /ā/ in Iran — but not in Afghanistan — means lip patterns differ predictably across national varieties. A hard of hearing person calibrated to one variety partially misreads another.

Fast social Persian

  • Casual restaurant speech compresses into near-invisibility
  • Persian at a dinner table with friends moves fast and informally. Words shorten, suffixes are swallowed, and politeness particles compress. The gap between classroom Persian and natural conversation over ash-e reshteh at a Tehran family table is very wide.

Persian-English mixing

  • Urban and diaspora restaurants blend both languages
  • In Tehran's newer restaurants and in diaspora Persian settings (Los Angeles, Toronto, London), English words are embedded freely into Persian sentences without signal — removing the predictability of pure Persian phonology for a deaf or hard of hearing diner.

Download for free

Download on theApp Store
The Challenge

Hearing loss in Iran: the cost of exclusion at the Persian table

A population-based study in Tehran (2012–2013) found a hearing impairment prevalence of 14.27%, with approximately 5.19% experiencing disabling hearing loss. Among disability types recorded in Iranian surveys, hearing loss was the most common category at 68.3% of all disability registrations — indicating that Iran's disability population is disproportionately composed of people with hearing conditions.

Consanguineous marriage is a significant contributor to congenital deafness in Iran: a study on cochlear implant candidates found consanguinity among parents of Iranian deaf children nearly twice the national average (65% vs 38%). A 2022 PMC situation analysis of Iran's ear and hearing care programme identified systemic gaps — insufficient audiological workforce, limited hearing aid coverage, and inadequate early detection — that leave a large share of the hearing-impaired population without support for daily life, including the social dining settings central to Iranian culture.

Captio AI captions Persian conversation in real time — whether the server at a traditional Tehran restaurant lists the khoresh options in rapid Tehrani Persian, or family members talk over each other at a Nowruz dinner table.

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

Download on theApp Store
Reviews

People love Captio AI

"Fast Tehrani Persian at a dinner table is already different from what I learned — and I'm Persian. With hearing loss the gap was even wider. Captio shows me what people actually said and I feel present at meals again."

Maryam R. 🇮🇷
maryam.r***@gmail.com
Tehran, moderate hearing loss

"Business lunches involve so much ta'arof that the real meaning is buried in the final verb. I was always missing exactly that part. Captio shows me the whole sentence."

Ali H. 🇮🇷
ali.h***@gmail.com
Isfahan, wears hearing aids

"Diaspora Persian in Toronto mixes Farsi and English constantly. I lip-read Farsi but the English parts always tripped me up. Captio captures both and I follow the whole conversation."

Sara N. 🇨🇦
sara.n***@gmail.com
Toronto, congenital deafness (Persian diaspora)

"Nowruz family dinners are huge — lots of people, fast Persian, everyone talking at once. Captio runs in the background and I follow the whole table without exhausting myself trying to lip-read."

Reza K. 🇮🇷
reza.k***@gmail.com
Mashhad, sensorineural hearing loss

"Fast Tehrani Persian at a dinner table is already different from what I learned — and I'm Persian. With hearing loss the gap was even wider. Captio shows me what people actually said and I feel present at meals again."

Maryam R. 🇮🇷
maryam.r***@gmail.com
Tehran, moderate hearing loss

"Business lunches involve so much ta'arof that the real meaning is buried in the final verb. I was always missing exactly that part. Captio shows me the whole sentence."

Ali H. 🇮🇷
ali.h***@gmail.com
Isfahan, wears hearing aids

"Diaspora Persian in Toronto mixes Farsi and English constantly. I lip-read Farsi but the English parts always tripped me up. Captio captures both and I follow the whole conversation."

Sara N. 🇨🇦
sara.n***@gmail.com
Toronto, congenital deafness (Persian diaspora)

"Nowruz family dinners are huge — lots of people, fast Persian, everyone talking at once. Captio runs in the background and I follow the whole table without exhausting myself trying to lip-read."

Reza K. 🇮🇷
reza.k***@gmail.com
Mashhad, sensorineural hearing loss

Download for free

Download on theApp Store
FAQ

Frequently asked questions

Have a real conversation through the noise in Persian.

Captio AI is free to start

Download for free

Download on theApp Store