We built — and run —
our own AI SaaS.
SaaS product development is one of Byosoku Lab's core strengths.
Byosoku Lab designs, builds, and operates 'Lucle', an AI chatbot SaaS, entirely in-house.
Not a working prototype — a production-grade SaaS product, all built by one developer.
Why we built our own SaaS
Not 'building for a client', but 'running it as our own business' — we internalized every skill needed for SaaS development and operations.
We needed it ourselves
We wanted to fully automate inquiry response, multilingual support, and LINE integration. No external SaaS met our requirements, so we built our own. It's used in production on the Byosoku Lab site.
Generalized for SMBs
We packaged the features we needed at an affordable ¥39,800/mo, making it accessible for small and medium businesses to adopt.
Not just building — operating
Billing, support, incident response, continuous improvement — we run every aspect of the SaaS business ourselves. That's why we can give meaningful advice on your SaaS vision.
Development services we can offer
We can build SaaS and AI products on par with Lucle, fully customized to your business needs.
SaaS Product Development
Full-stack SaaS with subscription billing, multi-tenancy, and admin panels. From MVP to production operations — end to end.
AI Product Development
Custom AI chatbots, automation tools, and knowledge-learning systems built on leading LLM APIs. We choose the optimal AI provider based on your requirements.
Payment & Subscription Systems
Production-proven experience with subscriptions and metered billing. Including webhook concurrency and idempotency handling in our designs.
Internal Tools & Business Systems
Rapid development of internal systems with auth, role management, and API integrations. Lightweight architectures that run on low monthly infrastructure cost.
Try it yourself
You can experience Lucle right now — via the chat widget on the bottom-right of this site, or through our LINE Official Account.
For product details, see the official site.
Discuss your SaaS or AI product
Want to build your own SaaS? Need an AI product tailored to your operations? Modernizing legacy systems? — Start with a free consultation. We help with tech selection through operational design.