Captio AI
🦻 Accessibility + 💻 Productivity App

Danish live captions and productivity tool for traveling

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.

✈️Airports and boarding

Gate changes and boarding calls at Copenhagen Airport (CPH/Kastrup) or Billund Airport come in Danish and English. Captio AI captions both languages so you catch gate numbers and boarding times without missing a departure.

🚂Train stations and public transport

DSB intercity trains announce stops in Danish. At Copenhagen Central, Aarhus, or Odense station, Captio AI captions the ticket window exchange and platform PA in real time.

🏨Hotels and check-in

A hotel receptionist in Copenhagen's Vesterbro or in Aarhus explaining check-in details and local tips in Danish. Place Captio AI on the desk and follow the full conversation without asking for anything repeated.

🗺️Navigating and asking for help

Asking for directions near Copenhagen's Nyhavn or navigating the Copenhagen Metro. Fast Danish from locals and DSB station staff — Captio AI captions their reply so you find your way.

🛃Customs and immigration

Danish border control and customs at Kastrup speak quickly in formal Danish and English. Captio AI captions every question so you respond accurately and confidently.

🎭Tours and activities

A guide at Tivoli Gardens, Kronborg Castle in Helsingør, or the ARoS museum in Aarhus delivering Danish commentary on Viking and modern Danish culture. Captio AI captions in real time.

Performance

Most accurate and fastest models

Danish
92.3%

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 a world that announces everything by sound

Captions any spoken exchange in real time

Airport staff, hotel receptionists, taxi drivers, tour guides. Hold the phone toward whoever is speaking and read the captions — in any setting, in any country.

60+ languages — no language barrier

Live Translator captions and translates in real time. They speak their language — you read in yours. For every country, every language, no manual setup between interactions.

Works anywhere with a data connection

Wi-Fi or mobile data. A local SIM or roaming plan keeps Captio AI running in any country — airports, hotels, rural areas, and everywhere in between.

Handles travel environments

Noisy airports, busy stations, echoing hotel lobbies. Captio AI is built for real environments — not quiet controlled rooms. It captions through the ambient noise of travel.

Discreet in any public setting

Hold the phone or place it near the speaker. Captio AI runs quietly and draws no attention — useful in customs, immigration, and any formal travel interaction where discretion matters.

Private by default

Travel conversations — customs declarations, hotel bookings, personal exchanges — are never stored or shared. Audio is processed in real time and discarded immediately.

Danish

Why Danish is hard to understand

Stød — laryngeal phonation

  • Danish stød is produced at the larynx as creaky voice or a glottal stop — completely invisible
  • Danish has stød: a suprasegmental laryngeal feature that functions phonemically to distinguish word pairs. Stød is realized as creaky voice or a glottal stop, produced at the larynx with no lip, jaw, or tongue movement. It distinguishes minimal pairs throughout the Danish lexicon — including common travel words. At Copenhagen Airport or a DSB ticket counter at Copenhagen Central Station, a Danish speaker's use of stød versus non-stød is invisible on their face, yet changes word meaning.

Lenition of plosives

  • Danish /b/, /d/, /g/ become fricatives or disappear — words sound different from how they look
  • Danish has extensive lenition: intervocalic /b/ becomes a fricative, /d/ becomes /ð/ or disappears entirely, and /g/ becomes a glide in many positions. This means common Danish words sound — and look on the lips — very different from their written or citation forms. At a Copenhagen hotel check-in desk or a Gate C counter at Kastrup, words that a deaf traveler has seen written arrive in a phonologically reduced form that doesn't match what lip-reading prepares them for.

27-vowel inventory

  • Danish has one of the world's largest vowel inventories — many distinctions barely visible
  • Danish has approximately 27 vowel phonemes including monophthongs and diphthongs differentiated by length and quality. Many Danish word pairs differ only in a vowel quality distinction that produces a minimal or invisible change in lip shape. At Kastrup Airport or DSB intercity trains, a Danish agent's speech involves vowel distinctions throughout their vocabulary that a deaf traveler cannot separate by watching lips alone.

Heavy elision in natural speech

  • Spoken Danish is one of the most reduced major European languages — even Scandinavians find it hard
  • Spoken Danish is notoriously reduced: consonants disappear, syllables compress, and words arrive sounding almost nothing like their written form. Norwegian and Swedish speakers — who share a Scandinavian heritage — frequently report that Danish is the hardest of the three to understand by hearing. At a fast-paced Copenhagen hotel or the DSB counter at Nørreport station, a deaf traveler's visual input is sparse because the spoken word has been heavily compressed.

Jutland vs Copenhagen dialects

  • Jutland Danish and Copenhagen Danish differ substantially in vowel system and prosody
  • Jutland Danish (Aarhus, Aalborg, Esbjerg) differs substantially from Copenhagen Danish in vowel quality and rhythm. In Jutland, stød is less common and vowel systems diverge from the capital's standard. A deaf traveler calibrated to Copenhagen Danish arrives in Aarhus or Aalborg to find different vowel realizations at airport and hotel desks — without visual announcement that the dialect has changed.

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The Challenge

Hearing loss and travel accessibility in Denmark

Denmark has among the highest self-reported hearing loss rates in Europe. A EuroTrak survey found that 11.9% of the adult Danish population — approximately 530,000 people — believe they have hearing loss, with 47.8% of those using hearing aids, meaning around 275,000 hearing-impaired Danes navigate daily life without amplification. The hear-it.org foundation reports that when hearing loss is measured audiometrically rather than self-reported, the true number of Danish adults with hearing loss is typically 15–20%. A national survey found that adults with hearing loss in Denmark have significantly greater risk of additional physical and mental health conditions, including depression and social withdrawal — a finding consistent with the social exclusion patterns documented across the European deaf and hard of hearing population.

Denmark's travel infrastructure — including Copenhagen Airport Kastrup (handling over 30 million passengers per year, the largest airport in Scandinavia), DSB's intercity rail network, and the Copenhagen Metro — communicates critical travel information through spoken Danish PA announcements. Denmark scores among the highest European countries for hearing aid adoption (91% with third-party reimbursement), reflecting strong policy support for audiological access. However, real-time captioning of airport and rail announcements is not a standard accessibility feature. Copenhagen's major tourist attractions — Tivoli Gardens, Kronborg Castle, the National Museum, the Viking Ship Museum in Roskilde — are primarily visited through verbally guided tours without captioning infrastructure.

Captio AI captions Danish in real time — whether a DSB platform announcement at Copenhagen Central, an immigration officer at Kastrup Terminal 3, or a guide at Kronborg Castle — so a deaf traveler in Denmark follows every instruction and announcement without depending on audio infrastructure built without them in mind.

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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

"Kastrup gate announcements come in fast Danish with a PA echo that removes any visual anchor. I pointed Captio AI at the speaker and the gate change appeared on screen. First time I've stopped asking the gate agent to repeat themselves."

Lars H. 🇩🇰
lars.h***@gmail.com
Hard of hearing, Copenhagen — frequent Kastrup traveler

"DSB trains between Aarhus and Copenhagen announce connections in fast Jutland Danish that's different from what I grew up with. Captio AI captioned the announcement accurately. Right platform, right train."

Mette A. 🇩🇰
mette.a***@gmail.com
Deaf, Aarhus — domestic rail traveler

"Even Swedes say spoken Danish is the hardest Scandinavian language to understand. At the Kastrup immigration booth the officer spoke formal fast Danish. Captio AI resolved every question on screen. I answered without confusion."

Thomas B. 🇩🇰
thomas.b***@gmail.com
Severely deaf, Copenhagen — business traveler

"The guide at Kronborg Castle spoke fast Danish mixed with some English for the foreign group. Captio AI captioned both. I followed the Hamlet connections, the Swedish siege history, the Renaissance interiors. Every sentence."

Karen N. 🇩🇰
karen.n***@gmail.com
Hard of hearing, Helsingør — tourist

"Kastrup gate announcements come in fast Danish with a PA echo that removes any visual anchor. I pointed Captio AI at the speaker and the gate change appeared on screen. First time I've stopped asking the gate agent to repeat themselves."

Lars H. 🇩🇰
lars.h***@gmail.com
Hard of hearing, Copenhagen — frequent Kastrup traveler

"DSB trains between Aarhus and Copenhagen announce connections in fast Jutland Danish that's different from what I grew up with. Captio AI captioned the announcement accurately. Right platform, right train."

Mette A. 🇩🇰
mette.a***@gmail.com
Deaf, Aarhus — domestic rail traveler

"Even Swedes say spoken Danish is the hardest Scandinavian language to understand. At the Kastrup immigration booth the officer spoke formal fast Danish. Captio AI resolved every question on screen. I answered without confusion."

Thomas B. 🇩🇰
thomas.b***@gmail.com
Severely deaf, Copenhagen — business traveler

"The guide at Kronborg Castle spoke fast Danish mixed with some English for the foreign group. Captio AI captioned both. I followed the Hamlet connections, the Swedish siege history, the Renaissance interiors. Every sentence."

Karen N. 🇩🇰
karen.n***@gmail.com
Hard of hearing, Helsingør — tourist

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FAQ

Frequently asked questions

Navigate confidently in Danish.

Captio AI is free to start

Download for free

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