Mobile KSI

Mobile KSI – The Official All-in-One Learning App

Vocabulary, grammar, conversation – now all in one app!
Learn Korean more easily and efficiently with the official integrated learning app.

✅ Full KSI Korean Curriculum in One App
Access the complete Korean language curriculum of KSI.
From beginner to advanced, follow a structured path to improve your Korean step by step.

🗣️ Speaking & ✍️ Writing Skills Improvement
Boost your speaking and writing skills with smart tools:

AI-powered speaking evaluation
Handwriting recognition for writing practice
Practice real-life communication and track your progress.

🎯 Personalized Learning Just for You
Collect and manage the words, grammar points, and exercises you've studied.
Review what you need and build your own study materials for efficient learning.

📲 Study Anytime, Anywhere – Even Offline
Once you download the learning content, you can use the app offline.
Study freely, wherever you are – without needing the internet.

Download Sejong Korean now and start your journey to mastering Korean, anytime, anywhere!

Recent changes:
en-US [Sejong Korean App – Update Notice]
Thank you for using Sejong Korean App!
We’ve made several improvements to enhance your learning experience
What’s New in This Update

- Fixed data download issues
- Added Level Test feature
- New Character Collection System
- UI Improvements
- some translate error solve
We’re always working to improve the app.
If you have any feedback or encounter any issues, please reach out to us through the app’s support menu.
Thank you!