Focused products
Each build starts with a real problem and keeps only what makes the workflow clearer, faster, or calmer.
A product studio for focused software.
Koryuu brings together independent software products, focused utilities, and useful experiments. Some support professional workflows; others make learning or everyday systems feel simpler.
The catalogue is the point: every product has its own identity, interface, and roadmap, while Koryuu gives them a shared home.
Built across platforms
Native macOS software, desktop production tools, web systems, and mobile products all share one home.
Multilingual by default
Arabic, Japanese, and English are considered where the product needs them — not added as an afterthought.
Built in Tokyo · 東京