Don't study.
Play in English
Kai
is an AI friend that practices speaking with you inside any app.
English
SpanishNo pressure.
Real outcomes.
Learn completely
relaxed
Just talk to Kai as you go about your day.
No study schedules. No stress.
Practice while doing
what you love
Your favorite apps become your classroom.
Learning has never been this fun.
Get fluent faster
like living abroad
Personalized immersion backed by science,
the way languages are meant to be learned.
Learn completely
relaxed
Just talk to Kai as you go about your day.
No study schedules. No stress.
Practice while doing
what you love
Your favorite apps become your classroom.
Learning has never been this fun.
Get fluent faster
like living abroad
Personalized immersion backed by science,
the way languages are meant to be learned.
Works inside any app
Kai lives inside the apps you already love
Turn hours of screen time into language immersion
A proven way to get fluent
A science-backed loop designed to help you master a language faster
Immersion
Like having a native friend who's always down to talk
Practice
Personalized sessions built from your real conversations
Apply
Kai prompts you to use what you've learned in new sessions
Join our users around the world
“I tried many apps out there but I quit after like a week. With Kai, I just turn it on and learn Spanish while I do stuff on my phone, so it's more fun and relevant to me.”
Joanne K
“I didn't expect this app to be so good! I can practice speaking English for hours everyday because I spend many hours on my phone. Highly recommend it!”
angoui_oui
“I think the big advantage of Kai is that AI can literally see anything on your screen, so I can practice speaking English with anything on my phone.”
Maria L
How your phone turns into language immersion
Start a session
Tap Kai to start. Kai will say hi and start talking to you
¡Oye Rachel! ¿Qué estás haciendo hoy?Just use your phone
Switch to any app. Kai stays with you as an overlay with captions and translations
Practice speaking
Kai sees your screen and uses it to get you speaking
Frequently asked questions
Kai is your native-speaking friend who lives on your phone. The best way to learn a language has always been through a friend who speaks it natively, and Kai is exactly that. Kai transforms all those hours of mindless scrolling into an immersive language experience. Every session feels like living abroad, right from your living room.
Kai uses screen recognition to understand what you're looking at, whether it's social media, texts, or photos, and creates real-time speaking lessons based on that content. Every scroll, every post, every message becomes an opportunity to practice.
You can learn English or Spanish, with more languages on the way. We currently support 15 native languages: English, Spanish, Chinese, Hindi, Arabic, Portuguese, Russian, Japanese, Korean, French, German, Italian, Vietnamese, Tamil, and Turkish. Even if you're a complete beginner, Kai is bilingual and walks you through everything in your native language.
Yes! Kai is free to try, no commitment needed. Honestly, just try one session. Most people are blown away by how natural it feels to learn from what's already on their screen. Once you experience it, you won't want to go back to traditional language learning.
Kai works across every app on your phone like social media, messaging, shopping, games, you name it. All that time you already spend on your phone? Now it's time spent learning a language. No extra time or effort needed for studying. Your screen time is your study time.
