Products
Standalone software designed to solve a clear problem and grow into a dependable product.
KeepOutcomesReliable;YieldUncomplicatedUtility.
Koryuu is a growing collection of focused software for production, learning, macOS, and everyday systems.
6 active builds5 platformsBuilt in Tokyo
Work tool2025
Koryuu DTP Master
Checks, compares, and prepares multilingual files for production.
TauriReact
Building2 platforms
Learning2025
JLPT Master
Teaches JLPT Japanese with Arabic support, SRS, drills, and reading.
ReactTypeScript
Building2 platforms
Mac utility2025
SuperNotch
Puts 19 everyday Mac tools into one compact notch-native panel.
SwiftSwiftUI
Building1 platform
Mac utility2025
Switcher
Hides windows and switches apps from two configurable thumb-keys.
Swift
Building1 platform
Personal system2025
Mylife
Brings daily routines, health, study, finance, and goals together.
React NativeExpo
Building3 platforms
Learning2025
CloudOps Associate
Combines bilingual AWS lessons, exams, labs, and incident practice.
ReactTypeScript
Building1 platform
What lives under Koryuu01 02 03
Utilities
Focused tools that remove friction from production work, macOS, and everyday routines.
Experiments
Useful ideas tested in real workflows until they earn a lasting place in the catalogue.