ETHEIAmakes study apps.

Our first, Lanma, turns a video or an article into a vocabulary lesson. Then it has you say the words aloud. It teaches 20 languages and has its first 100+ learners.

ETHEIA was founded in 2026 by Yu Taek Lee, who spent more than four years at NAVER and worked on MYPLACE, which 15 million people use each month.

Describing a lesson is slower than giving one, so the rest of this page is a lesson. Lanma would pick out the expressions underlined above.

Lanma creating a word set from a YouTube link
A word set being generated from a YouTube link.

A lesson made from this page

  1. Lanma picks out the expressions.
  2. You leave out the ones you know.
  3. The rest come back as cards.

This is an imitation that runs on four expressions from the text above. The app does it with any video or article, adds quizzes and a review schedule, and finishes with a voice conversation.

Choose what to study

  • say aloud Everyday

    To speak so that it can be heard, not only in your head.

  • found Everyday

    To start a company or an organisation.

  • work on Phrasal verb

    To spend time building or improving something.

  • pick out Phrasal verb

    To choose a few things from a larger group.

What we make

Lanma

Language learning. Live

The lesson above, done with any YouTube video, article or song you share. It leaves out the words you already know, brings the rest back just before you'd forget them, and ends with a voice conversation.

More about Lanmalanma.ai

Lanma progress screen with a streak, words due for review and mastery levels
Progress: a 16-day streak and 11 words due for review.

StudyLingo

Exam and course study. In development, under a working title.

StudyLingo does for course material what Lanma does for videos. It cuts slides and lecture notes into short lessons and schedules the reviews, for exam candidates and the academies that prepare them.

More about StudyLingoWhich parts AI writes

A StudyLingo question answered wrongly, with the correct answer marked and a short explanation
A question in the development build. The app isn't public yet.

What a learner wrote

“I used to look up every word I did not know while watching. Now I learn not only the expressions from the video but related ways to use them too, which I especially liked.”
A Korean Lanma user learning English, by email. Translated from Korean.

Write to us

If you teach a course or invest in education companies, this address reaches the founder, who answers every message.

yutaek@etheia.co

Other ways to reach ETHEIAAbout the founder