G · Growth
The name Tago
One discovery opens the next understanding.
Looking up a word never ended with its definition. The example showed how it lived, and an unfamiliar expression inside that sentence became a new question.
From entry to example, from example to another entry. Knowledge stayed longer and grew wider when I followed what I had discovered instead of a fixed table of contents.
Tago takes its name from that movement of learning. Like the Korean expression ‘타고 가다’—to ride something onward—it means crossing from what you know now into the next understanding.
That is why Tago products do not try to place everything on one screen. They are designed to help learners discover what is worth trying next.
Connection is not a decorative metaphor. It is the basic unit with which Tago designs learning.
물이 흐른다
시간이 흐른다
시간을 나누다
A word opens a sentence, and the sentence calls the next piece of knowledge.
Brand philosophy
Everything leads to something else.
Knowledge leads to knowledge, people lead to people, experience leads to experience. We grow by following those connections.
GEKS
Four questions for judging a good product.
GEKS is not a set of words for the wall. They are questions Tago asks whenever we make or improve a product.
E · Experience
Experience
K · Knowledge
Knowledge
S · Share
Share
Growth
Learning is more than accumulating knowledge.
Small efforts add up every day, and at the end you become someone different. Tago’s Tabi represents that change.




Founder
Designing the next learning experience between education and technology.
Why we exist
We create products that help people grow through experience, knowledge, and sharing.
Chanwoo Song studied Korean language education at bachelor’s and master’s level, and met learners as a certified Korean language teacher.
He later researched language AI and led the planning and launch of diverse AI products. Tago began where educational standards meet the experience of building products all the way through.
- Study
- BA · MA in Korean Education
- Qualification
- Korean Language Teacher
- Research
- Language AI
- Product
- AI Product Lead
How we use AI
AI does not answer in place of the learner. It suggests the next connection and possibility so the learner can think further.
How we design learning
Instead of showing more explanations, we let learners write, choose, try again, and see what changed.