About ETHEIA
What ETHEIA makes
ETHEIA is an education company. It makes study apps for people with a few minutes a day to spare.
Lanma, for languages, is live on iPhone and Android. StudyLingo, for exams and coursework, is in development. Both work the same way: you give the app something you're studying, and it cuts it into short lessons and schedules the reviews.
How a lesson is built
- Start from your own material
- Each lesson is built from something you chose, such as a video you watched or the notes from your course.
- Short sessions with a clear end
- A session teaches one idea and asks one question about it. It takes a few minutes.
- Come back before you forget
- Each item returns on a spaced-repetition schedule, and the ones you got wrong return sooner.
Which parts are written by AI
| Task | Done by |
|---|---|
| Reading the material and drafting the lessons and questions | AI drafts these. Each lesson is tied back to the sentence or page it came from, so you can check it. StudyLingo's lessons are written with Claude. |
| Review schedules, streaks and progress tracking | Ordinary code with no AI in it. The schedule behaves the same way every time. |
Founder
Yu Taek Lee
Founder and software engineer
I founded ETHEIA in 2026. Before that I spent more than four years as a software engineer at NAVER, working on MYPLACE, a service used by 15 million people a month, and on internal AI tools used by hundreds of engineers.
I'm now completing a master's in Artificial Intelligence at Nanyang Technological University in Singapore.
Company details
| Legal name | ETHEIA LLC |
|---|---|
| Type | Limited liability company |
| Registered in | Wyoming, USA |
| Formed | 3 February 2026 |
| Filing ID | 2026-001884062, on record with the Wyoming Secretary of State |
| Registered office | 1621 Central Ave, Cheyenne, WY 82001, USA |
| Contact | support@etheia.co |