Kaika Lab
Kaika Lab is an independent software studio in Osaka, Japan, founded in July 2026 by Michael Jiang. We make exam-prep apps and study materials for people learning Korean and Japanese, and tools for the teachers who teach them.
Products
| Product | What it is | Where |
|---|
| TOPIK PILOT | A Korean study site and an Android app for the TOPIK exam | topikpilot.app, Google Play |
| JLPT-GO | Practice tests for JLPT N1 to N3, with an explanation for every question | Google Play |
| Cloze Maker for Japanese and Korean | A Google Docs add-on that turns a passage into a cloze worksheet and an answer key | Google Workspace Marketplace |
| OPENVOIX | An Android app for learning English, Japanese and Chinese by listening and typing | Google Play |
| Learn Korean with a Drama | A 100-episode short drama in everyday Korean | YouTube |
All of our Android apps: Kaika Lab on Google Play
This repository
The source of https://kaikalab.com. Static files only, served by Cloudflare Workers.
site/: the pages. Japanese at /, English at /en/, Korean at /ko/, and the Cloze Maker product page, privacy policy and terms at /cloze-maker/wrangler.jsonc: the Cloudflare settingscheck-site.js: checks titles, descriptions and internal links, and the statements Google requires in the Cloze Maker privacy policy
Run node check-site.js before publishing, then npx wrangler deploy.
日本語
Kaika Lab（カイカラボ）は、2026年7月に Michael Jiang が大阪で開業したソフトウェア工房です。韓国語と日本語を学ぶ人のための試験対策アプリと学習教材、語学を教える先生のための道具を作っています。
このリポジトリは kaikalab.com のソースです。公開の前に node check-site.js を実行し、npx wrangler deploy で公開します。
Google Docs and Google Play are trademarks of Google LLC. TOPIK and JLPT are trademarks of their respective organisers; Kaika Lab is not affiliated with them.
© 2026 Kaika Lab. All rights reserved.
