01 / LANGUAGE LEARNING
HanluWeb / iOS / Android
Hanlu
Web · iOS · AndroidMake Chinese a daily habit.
Learn Chinese with HSK vocabulary, quizzes and audio. Your progress follows you across devices.
INDEPENDENT DEVELOPER & PRODUCT BUILDERTOKYO, JP
Curiosity,
made useful.
Explore my work
Hi, I’m Takeru.
I'm a student developer in Tokyo, building products for the web, mobile and AI.
Learning, making, and turning small everyday frustrations into useful things.
01 / SELECTED WORK
5 products, a little less friction.Built for the everyday.
02 / CHINESE DICTIONARY
Hanlu DictWeb / iOS
Hanlu Dict
Web · iOSLook it up. Then make it stick.
A Chinese dictionary you can search in Japanese, Simplified Chinese or pinyin. Check definitions, pronunciation, examples and HSK levels, then review saved words in Hanlu.
03 / DEVELOPER TOOL
Token MetermacOS
Token Meter
macOSYour AI usage, at a glance.
A native app for tracking Claude Code, Codex and Copilot CLI, from daily usage to rate limits.
04 / JAPANESE INPUT
Furigana KeyboardAndroid / iOS
Furigana Keyboard
Android · iOSWrite, read, and connect in Japanese.
A Japanese keyboard for handwriting and romaji. Check readings with furigana candidates as you type, even offline.
05 / ANDROID UTILITY
Per-App LanguageAndroid 13+ / Shizuku
Per-App Language
Android 13+ · ShizukuEach app, in your language.
Set a language for each Android app through Shizuku, including apps missing from Android's language settings.
02 / OPEN SOURCEBetter,
Better,
when shared.
Connecting AI with the world you use every day.
Railways, email, and services across Asia.
Practical integrations, built in the open.
TRANSPORT
China Rail MCP
Read-only access to official China Railway 12306 information: stations, timetables, fares, availability and stops.
TRANSPORT
UNDER DEVELOPMENTJapan Rail MCP
Search Japanese railways, starting with the Shinkansen. Use the station catalog, or add an Ekispert API key for timetables and fares.
COMMUNICATION
MCP Mail Core
A security-focused, multi-account foundation for Gmail, QQ Mail and iCloud Mail integrations.
ECOSYSTEM
Silkroad MCP
A catalog of MCP servers, reusable components and templates connecting AI to Asian services and devices.
03 / A LITTLE ABOUT MEAlways learning.
Always learning.
Always building.
Language-learning apps, developer tools, and ways to bring AI into everyday life. I follow my curiosity to build products that make someone's day a little easier.
TakeruStudent developer
& product builder in Tokyo
& product builder in Tokyo
MY TOOLBOX
01
Mobile
Swift / SwiftUI / Kotlin / Android / Jetpack Compose
02
Web
TypeScript / React / Next.js
03
AI & Backend
Python / MCP / Supabase
04
Infrastructure
Vercel / EdgeOne