Product studio. Company-sized ambition.

tonkotsubun is a product studio making digital products and custom software that make everyday work easier.

Based in Bangkok. Building for a world where small, capable teams can make unusually useful things.

Investment Portfolio

Explore my personal investment portfolio.

A warm, memorable name for a studio that makes practical products and useful systems.

The name

Start narrow, build in public when useful, keep evidence attached to claims, and let products graduate.

The method

Digital products, custom software, AI systems, enterprise workflows, practical experiments, learning notes, and tools worth maintaining.

The territory