Hiroki Umatani

ROI Detective Agency Chief

About

Helping agencies automate high-stakes proposals. Expertise in ROI analysis and strategic sales documentation. Currently building tools that bridge the gap between creative ideas and business results. Based in Japan 🇯🇵

Links

ROI Proposal Generator

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Gone streaking

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Maker History

ROI Proposal GeneratorGenerate ROI-driven proposals that close $400k+ deals.
Feb 2026

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Joined Product HuntFebruary 11th, 2026

Forums

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3mo ago

ROI Proposal Generator - Generate ROI-driven proposals that close $400k+ deals.

Stop staring at a blank cursor. ROI Proposal Generator analyzes 8 critical business dimensions to transform simple ideas into strategic documents that close $400k+ deals. Built by an agency owner to eliminate the "Cognitive Friction" of proposal writing.