Built a privacy-first Second Brain app in a single HTML file — no account, no server, works on every device

I got frustrated with every productivity app I tried.

Notion was too complex. Todoist too narrow. And all of them stored my private journal entries on their servers — that always bothered me.

So I built my own system from scratch. A single HTML file that opens in any browser on any device — mobile, PC, Mac, everything.

It has 6 sections built around the PARA method:

📥 Inbox — capture anything instantly

🎯 Projects — track with progress bars and due dates

🌿 Areas — maintain your health, career, finances

📚 Resources — personal knowledge library

💡 Ideas — kanban board, Spark → Shipped

📓 Journal — daily prompts, 100% private

Everything saves to your device only. Never touches a server. Works completely offline. No account, no subscription, one $17 payment forever.

Built it because I believe your thoughts should belong to you — not a company that can change pricing, go down, or read your data.

Listed it on Gumroad yesterday. Early days but excited to see where it goes.

Happy to answer any questions about how it’s built or the PARA method.​​​​​​​​​​​​​​​​