KhanEdu: From Midnight Itch to AI-Powered Study Hub

Archive note (2026): this post describes an earlier KhanEdu direction and is retained as historical writing. It does not describe the current Korea Simulator concept or current product availability.

KhanEdu started as a late-night itch. I was grinding for my own TOPIK exam, juggling flashcards that never synced and PDFs that never loaded on the subway. One thought kept looping: "Why isn't there a single place that feels like the exam, talks like a friend, and works on my phone?" A month of sleepless coding later, KhanEdu went live.

Real-time mock tests: past TOPIK exams are instantly accessible, and the timer, answer sheet, and scoring report all behave like test day - minus the sweaty palms.

Grammar and translation in one tap: no more opening five tabs just to check whether ~거든요 feels too casual.

AI study buddy: the chatbot answers almost anything you ask, and because explainability beats magic it shows why it flagged a grammar issue instead of silently auto-correcting.

Coming Up Next

Speaking Lab 1.0 - real-time pronunciation feedback using Azure Speech plus our own accent-severity model.

Leaderboards and mini-quesly study nights into light competition.

React to React Native port - so the app feels native on both the App Store and Google Play.

Platforms can feel faceless. KhanEdu isn't. It's powered by one slightly over-caffeinated student who still misses half the subway stops while debugging. If you've tried the site, thank you for every bug report and "아, 이거 편하다" DM. If you haven't, the door's open:

Building it taught me that learning a language is less about brute memorization and more about creating a place you actually enjoy hanging out in. KhanEdu is my attempt at that place. I hope it lifts your score, or at least makes the journey feel lighter.