Hirofumi Inoue

System Architect & Obsidian Enthusiast

#96081902 followers 2 following

About

Hi, I'm Hirofumi, a System Architect based in Japan. I'm passionate about building local-first, privacy-focused tools that optimize personal knowledge management. I built the Second Brain Joiner & VaultPress bundle to solve my own mobile workflow frustrations with Obsidian and AI. No subscriptions, just tools that work!

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Maker History

Second Brain Joiner (Android)Merge Obsidian notes to AI in seconds. Now on Android! 🚀
Apr 2026
Second Brain Pro BundleThe ultimate AI & PDF toolkit for Obsidian on iOS.
Mar 2026

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Joined Product HuntMarch 24th, 2026

Forums

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1mo ago

Second Brain Joiner (Android) - Merge Obsidian notes to AI in seconds. Now on Android! 🚀

Second Brain Joiner hits Android! 🚀 Safely merge local Obsidian notes to feed AI (ChatGPT/Claude). ✨ New Pro Features: Precise Token Calc, Adv Filtering (AND/OR), and Auto Chunking. Everything runs 100% locally. 🍎 iOS Users: Don't miss the "Second Brain Pro Bundle"! Get both "Joiner" (AI Connector) and "VaultPress" (Beautiful PDF Exporter) at a discounted price for the ultimate mobile workflow. *(Pro features coming soon to iOS!)*

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2mo ago

Second Brain Pro Bundle - The ultimate AI & PDF toolkit for Obsidian on iOS.

Stop the copy-paste hell. Second Brain Joiner bridges your Obsidian Vault and LLMs by merging notes with auto-generated tree maps and smart separators—100% locally. VaultPress complements it by exporting Obsidian-specific Markdown to pixel-perfect PDFs. Get them individually ($3.99) or grab the Discounted Pro Bundle ($6.99). No subscriptions! Just a one-time purchase to supercharge your mobile workflow.