Airport & arrival
Practice: immigration & check-in
LinguaOS
AI Language OS
Understand with live interpreting,speak through situation learning.
Live interpreting · Situation learning · AI chat
Create your own situations at your level, practice, and save them as cards
A new language,
a new you.
9:41
LinguaOSLearn Today
Speak Tomorrow
Speak Tomorrow
- English
- KoreanSoon
- JapaneseSoon
- ChineseSoon
- SpanishSoon
- FrenchSoon
Nice to meet you!
Where are you from?
Today's missionOrder at a caféPractice it like the real thing.
1/3›AI conversationTalk freely with AI
and grow your speaking.
›and grow your speaking.
Pronunciation92%
Start a conversation
No credit card to start · 7-day full refund
NEW · Core feature
Your situations aren't in textbooks — create and practice them yourself
Pick your level, describe a situation in one line — AI builds a role-play and a phrase card for it. Save the card and review anytime.
- 🎯1. Pick a levelBeginner to advanced — auto-suggested from your diagnosis
- 📝2. Create a situationOne line like "reporting lost luggage at the airport"
- 🎭3. Role-playTalk with an AI counterpart and use the target phrases
- 🃏4. Generate a cardSave what you practiced as your own card
NEW · Situation cards
Not cards you just look at — cards you actually say
Preview today's expressions on a card, repeat them out loud, then act out the situation with your AI coach. Afterwards, a recap shows what you used and what you missed.
- 1Preview the cardKey expressions for one situation on one screen. Tap a line to hear it
- 2Listen & repeatSay each line out loud and match the pronunciation
- 3Role-playYour AI coach plays the other side. Use 3 target expressions in real dialogue
- 4RecapSee what you used, what you missed, and a natural rewrite of your sentences
🔊 Tap any line on a card to hear it
Start a card conversation →67 cards now · more on the way
1:1 with your AI coach
A talking AI coach plays the other side
It won't say the answer for you. When you're stuck it gives a hint and gets you to say it yourself.
- Talking avatarA coach whose mouth moves with the voice — practice like a real conversation
- See the translationCheck the coach's line in your language only when you need to
- Show or play a sample answerStuck? See or hear an example, then say it yourself
- Target phrase checklistSay a card phrase and it lights up; miss it and it comes back as a hint
Getting started takes a minute
1
Sign up in 30s
Just your goal and how much time you have daily
2
AI assessment
A 15-minute test finds your level and weak spots
3
Daily mission
Follow the lesson your AI coach built this morning
Nobody gets the same course — your own AI coach
🧬
AI assessment
An 8-axis Language DNA profile places you on CEFR A1–C2
🗓️
Rebuilt daily
Your weak points decide what tomorrow's lesson contains
🎤
AI speaking practice
20 real situations out loud — plus role-plays of situations you create yourself
🔁
SRS vocabulary
3,000 core words resurface exactly before you'd forget them
✏️
Instant correction
Natural rewrites and tips the moment you speak or write
📈
Progress report
XP, streaks and DNA shifts make improvement visible
Which situation do you want to practice?
Which language do you want to learn?
Start speaking with an AI coach from day one.
🇺🇸
English
Available now
🇰🇷
Korean
Coming soon
🇯🇵
Japanese
Coming soon
🇨🇳
Chinese
Coming soon
🇪🇸
Spanish
Coming soon
🇫🇷
French
Coming soon
English is live today. The other language packs are in development — the AI coach, assessment and speaking engine are already shared across all of them.
Three ways to begin
A place for conversation.
A place to learn English.
Create your own situation to practice, explore interpreting modes, or learn English in a familiar scene. Start with what you need today.
Continue existing lessons →Where will your next conversation happen?
Start interpreting now or practice before your trip, from the same situation.
Editorial picks · arrival, transport, accommodation, food, shopping, then asking for help. These are not based on personal activity.
Transport & directions
Practice: taxis & directions
Hotel
Practice: check-in & requests
Restaurants & cafés
Practice: booking & ordering
Also practice ordering at a caféShopping
Practice: shopping & returns
Problems & help
Practice: asking for help at a clinic
Interpreting currently prepares the mode and situation. Speech recognition and translation models are not connected yet.
Help scenarios practice communication. They do not provide diagnosis or contact emergency services.
Explore the 12-week conversation plan →English first. Translation when you need it.
01
Live interpreting
Listening, two-way conversations, or listening with reply suggestions. Explore a mode for each situation.
Voice and translation models not connected
ListenTwo-wayListen + 3 replies
Interface preview
Something you might hear at a café
따뜻한 것으로 드릴까요, 차가운 것으로 드릴까요?
3 sample replies · Authored examples
따뜻한 것으로 주세요.
차가운 것으로 주세요.
어떤 것을 추천하시나요?
Microphone off · Not live interpreting
02
English in context
Meet the English in a scene first. Reveal a translation when you need it, then try a short reply and a quiz.
Try 10 café words
A sunlit café컵
Tap the English card to try revealing a translation.
10 words · 6 learning modes
Learn English through a sceneExplanations start with Korean, Japanese and Chinese. English remains the learning language.
Keep the conversation going, beyond one sentence
Understand the other person, use an example to shape your own reply, and hear what comes next. This is the shared direction for interpreting and situation practice. The interpreting screen currently uses authored examples; live voice models are not connected.
- 01
Choose a situation
- 02
Hear the other person
- 03
See sample replies
- 04
Take your turn
- 05
Continue the dialogue
From a scene to words you can revisit
- 01
Scene
- 02
English card
- 03
Tap to translate
- 04
Sample reply
- 05
Quiz
- 06
Review
Lingua OS
Your existing learning stays
Keep using situation cards, conversation practice, daily missions and SRS review. Visual vocabulary is a separate new learning format.
67
Situation cards
Existing card collection
A three-month goal: start speaking
We are designing a 12-week intensive path for beginners. You choose the time you can invest each day; a course with several hours of daily study is still being designed. For now, explore the existing 12-week curriculum.
- Target duration
- 12 weeks · about 3 months
- Design starting point
- Beginner A1–A2
- Study time
- Choose your daily commitment
Evaluation direction: use your starting level and practice record to check whether you can understand familiar everyday exchanges, give short replies and continue to the next turn. This does not mean automated proficiency assessment is complete.
This is a learning goal, not a guaranteed result. Progress and time needed vary by person.
Explore the existing 12-week curriculum ↗STUDIO
Multilingual sentence Studio
Explore introductory sentences and text translation in Korean, English, Japanese and Chinese, separately from the English conversation course.
Open sentence Studio ↗LiveLingo connection in preparation
Bring expressions from real conversations
A future connection will bring selected expressions and context from LiveLingo into learning. Live interpreting and offline voice models are not connected to this web app.
Everyday English companion · In preparation
Your everyday words, in English
We are preparing a companion mode that shows English versions of your everyday Korean speech so you can practice saying them. The live voice connection is not complete.
- Start explicitly and stop whenever you choose
- Inform people nearby and obtain their consent
- Designed without continuous or hidden recording
Design a scene of your own
Prepare an illustration prompt and lesson data from a topic and words. Automatic image generation inside the app is not connected yet.
Pay once for three months
Not a subscription. You buy the full 3-month program and it ends on its own.
Free
Build the habit first
$0
- ✓15-minute daily mission
- ✓1 AI speaking session a day
- ✓Unlimited SRS review
- ✓One level assessment
★
3-Month Mastery
The shortest path to speaking
$89for 3 months
≈ $29.67 per month
- ✓Full 60-minute daily mission (shadowing included)
- ✓Unlimited AI speaking and pronunciation feedback
- ✓A curriculum rebuilt for you every night
- ✓Weekly progress report
- ✓Ends automatically after 3 months — nothing to cancel
Secure PayPal checkout · Cards accepted
Mastery + Coach
Writing feedback that reads like a tutor
$149for 3 months
≈ $49.67 per month
- ✓Everything in 3-Month Mastery
- ✓Unlimited AI writing correction
- ✓Weekly level tests and detailed pronunciation reports
- ✓Priority support
Secure PayPal checkout · Cards accepted
Full refund within 7 days · No auto-renewal
Frequently asked questions
Can I really speak after three months?
Most learners who keep 30–60 minutes a day move up half a CEFR band. What matters is not volume but minutes spent speaking out loud, which is why every mission includes shadowing and conversation.
How is this different from other language apps?
Nobody gets the same course. Every night your previous day is analysed and today's mission is rebuilt, so the sounds and grammar you got wrong become tomorrow's drills.
Does the payment renew automatically?
No. You pay once for the full three months and it ends on its own. There is nothing to cancel, and you get a full refund within the first 7 days.
How much can I do for free?
The level assessment, a 15-minute daily mission, one speaking session a day and vocabulary review stay free forever. No credit card required.
Which languages can I learn?
English is available today. Korean, Japanese, Chinese, Spanish and French are in development, and the assessment, speaking and pronunciation engines are already shared across all of them.
Start today, and three months from now is different
Thirty minutes a day. Follow the lesson your AI coach designed. Try it without signing up.
Start free →