Katsunori Yoshinaka

Building the future of AI-driven work

About

I am an engineer. I free humans from tedious tasks! I am developing drillspark.io, a service where humans and AI work together to eliminate tedious tasks.

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Maker History

DrillSparkTurn complex logic into visual flows with AI dialogue.
Feb 2026

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Joined Product HuntAugust 7th, 2022

Forums

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1mo ago

How do you decide what features should be free and what should be paid?

Let me start from the creator s perspective:
I personally don t have a product (apart from hiring people for creative work or offering personal consultations).

But as a creator, I constantly share content, insights, and information, value that helps me build trust (for free). Based on that perceived expertise, people eventually decide to work with me (a paid service).

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2mo ago

DrillSpark - Turn complex logic into visual flows with AI dialogue.

DrillSpark turns your complex logic into hierarchical visual flows through AI dialogue. Stop struggling with manual boxes—just talk to the AI to refine and drill down your ideas. Native Mermaid.js support for seamless Git, Notion, and Confluence sync.