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Your chats, slowly becoming another language

Tokki is a messenger where learned words replace themselves in your conversations. You chat. Your messages evolve. You learn without trying.

No spam. We'll let you know when it's ready.
German Study Group
Ana, Marco, you
Anawhat are you doing heute?
going to the Bibliothek to study!
New word learned
coffee Kaffee
MarcoI'll bring Kaffee for everyone
Danke! see you morgen
AnaGut, bis morgen!
... Marco is typing
Message
Watch your conversations evolve
You start chatting normally. Word by word, day by day, your messages transform into the language you're learning.
Day 1

Just chatting

Everything's in your language. You create a group, pick a target language, and start talking.

Hey what are you doing today?
Going to the library to study
Week 2

First words appear

You learn a few words and add them. They start replacing themselves in everyone's messages.

Hey what are you doing heute?
Going to the Bibliothek
Month 2

It's happening

Half your messages are in the new language. You're reading them without thinking about it.

Was machst du heute?
Ich gehe in die Bibliothek
Bibliothek
/bi.bli.o.ˈteːk/
Pronunciation

Tap any word.
Hear it spoken.

Don't know how to say a word? Tap it. Tokki plays the native pronunciation instantly. Works even with your phone on silent.

Every word in your vocabulary becomes a word you can actually say out loud.

Vocabulary quizzes

Quizzes from your
real conversations

Forget generic word lists. Tokki generates quizzes from the words you and your friends actually use every day.

Multiple choice. Both directions. No timers, no pressure.

What does Bibliothek mean?
bookstore
library
school
university
Built for learning, designed for chatting
A real messenger with language superpowers.
Aa

Smart word replacement

Learned words auto-replace in every message. Tap to reveal the original.

Tap-to-pronounce

Hear native pronunciation for any word. Works on silent mode.

?!

Vocabulary quizzes

Auto-generated from your conversations. Both directions.

Import vocabulary

Bring words from one chat to another. Never start from zero.

Real-time messaging

Typing indicators, replies, push notifications, unread counts.

Progress tracking

Words learned, messages sent, daily streak. Per chat or overall.

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Groups & private chats

Learn with a study group or practice one-on-one.

🌐

15+ languages

German, Spanish, French, Portuguese, Japanese, Korean, and more.

Always improving

We ship new features every week based on what our users tell us.

Your next conversation could teach you something

Join the waitlist. Be the first to turn your chats into language lessons.

We'll only email you when it's ready.