Hindi live captions and productivity tool for phone & video calls
For deaf and hard of hearing people.
coming soon
Download for free
Download on theApp Store
Everything you need to follow Hindi phone & video calls
Four tools built for deaf and hard of hearing Hindi 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 from Maa from another state, relatives from UP or Rajasthan, family from the village. Hindi family calls cross dialect regions, each person talking at their natural speed in their own regional variety.
Client calls, supplier negotiations, team check-ins. Hindi-medium businesses run daily operations by voice call — quick decisions, logistics updates, and customer calls all happen over the phone.
Doctor callbacks, Apollo health helpline, pharmacy queries, AIIMS appointment confirmation. India's healthcare system relies on phone for results and instructions — missing a medication name or dosage has direct consequences.
SBI or HDFC IVR menus, electricity board helplines, gas agency booking lines. Hindi-language automated systems speak at standard rate and expect quick responses, with no text fallback.
A WhatsApp call from a family member in the Gulf, a cousin in the UK, a relative in Canada. Diaspora Hindi carries English words and a different pace — accent shift on top of international call compression.
WhatsApp Video with family across India, Google Meet for work. Even with video on, lip reading Hindi at speed across regional accent varieties is cognitively draining. Captions remove that effort.
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 Hindi is hard to understand
Aspiration contrast
- Hindi's aspirated consonants vanish on a compressed call
- Hindi has four series of stop consonants — voiced/unvoiced each in aspirated and unaspirated forms (ब/भ, प/फ, द/ध, त/थ). Aspiration is entirely acoustic: invisible on lips and partially masked by phone compression. Minimal pairs like /pal/ vs /phal/ collapse on a poor line.
Schwa deletion
- Hindi drops the schwa in unpredictable places by region
- Hindi regularly deletes word-internal and word-final schwas: 'kamala' is spoken as 'kamlā'. The deletion pattern differs by region — UP Hindi, Punjabi Hindi, and Rajasthani Hindi each have different rules. On a phone call, these deletions shorten words unpredictably, making familiar words hard to identify.
Retroflex series
- Retroflex consonants are invisible and fade in compression
- Hindi's retroflex sounds (ट, ठ, ड, ढ, ण) involve the tongue tip curling backward — completely invisible on the lips. On a phone call, the acoustic difference between retroflex and dental counterparts is subtle and easily lost in compression, producing near-identical signals for different words.
Regional accent speed
- Each dialect region runs at a different speed and rhythm
- Bhojpuri-accented Hindi, Punjabi-accented Hindi, Rajasthani Hindi, and Mumbai Hindi each have different phoneme realisations and speaking rates. A family call from Lucknow sounds different from one from Mumbai — and there is no visual context on a phone call to anchor the unfamiliar variety.
Code-switching
- Urban Hindi mixes English words mid-sentence
- Urban Hindi freely switches to English for work vocabulary, medical terms, and brand names: 'meeting rakhein', 'call aayegi', 'appointment confirm karo'. The shift between Hindi and English phonology mid-sentence creates unexpected sound patterns on an already compressed call.
Download for free
Download on theApp Store63 million Indians with significant hearing loss
A study published in the National Medical Journal of India (2022) estimated 63 million people — 6.3% of the Indian population — suffer from significant auditory loss. Nationwide disability surveys consistently identify hearing loss as the second most common cause of disability in India. Community-based studies across different states report prevalence of disabling hearing loss ranging from 4.5% to 18.3%, with rural populations and adults over 60 carrying the highest burden.
India has no national telephone relay service for deaf callers — no government-operated TTY equivalent, no captioned telephone service at scale. India's telemedicine boom since 2020 runs primarily on voice calls. For a deaf or hard of hearing patient who cannot follow a rushed Hindi phone consultation, this creates a healthcare access gap with direct consequences: missed diagnoses, wrong dosages, and failed appointment confirmations. Hearing aid penetration in India covers less than 5% of need.
Captio AI is built for those calls. Put a doctor's callback, a bank verification, or a WhatsApp call from family in another state on speaker, and read every word in real time — whether the caller is from UP, Punjab, or Maharashtra.
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
"Doctor callbacks from Apollo — Hindi spoken fast with medical terms, I'd miss the medication name every time. Now I put the call on speaker and read every instruction as it's said. That changed my relationship with my own healthcare."
"Work calls between Mumbai and Lucknow — completely different Hindi accents and rates. I used to bluff my way through them. Now I follow every word and actually respond to what people said, not what I guessed they said."
"Calling family in Rajasthan from the UK was my weekly anxiety. Rajasthani-accented Hindi on an international line. Captio AI captions it perfectly. I actually enjoy those calls now."
"The electricity board helpline put me on hold for twenty minutes and then spoke fast Hindi over crackling audio. I had Captio AI on the whole time. Read every word. Sorted the problem in one call."
"Doctor callbacks from Apollo — Hindi spoken fast with medical terms, I'd miss the medication name every time. Now I put the call on speaker and read every instruction as it's said. That changed my relationship with my own healthcare."
"Work calls between Mumbai and Lucknow — completely different Hindi accents and rates. I used to bluff my way through them. Now I follow every word and actually respond to what people said, not what I guessed they said."
"Calling family in Rajasthan from the UK was my weekly anxiety. Rajasthani-accented Hindi on an international line. Captio AI captions it perfectly. I actually enjoy those calls now."
"The electricity board helpline put me on hold for twenty minutes and then spoke fast Hindi over crackling audio. I had Captio AI on the whole time. Read every word. Sorted the problem in one call."
Download for free
Download on theApp StoreFrequently asked questions
Follow every call in Hindi.
Captio AI is free to start
coming soon
Download for free
Download on theApp Store