I Replaced My Note-Taking App With an AI Second Brain — Here's What Happened

I've been a note-taking obsessive for over a decade. Evernote, Notion, Obsidian, Bear, Apple Notes, Roam Research, Logseq, Craft. Every new app promised to be "the one."

Six months ago, I tried something different. I replaced my entire setup with Sidebrain, an AI second brain that learns from conversations instead of requiring me to organize information into files.

Month 1: The Withdrawal Period

The first week was uncomfortable. Where do I put this idea? How do I save this article?

With Sidebrain, the answer is: just tell it. Had an idea? Tell Sidebrain. Read an interesting article? Share the key insight. It's remembered. Not filed, not tagged — just remembered.

By week three, I felt lighter. I wasn't managing a system anymore.

Month 2: The Connections Started Happening

I was working on a blog post and Sidebrain immediately pulled in context from three different conversations I'd had over the previous month. I hadn't tagged these. I hadn't linked them. Sidebrain just understood they were related.

In Obsidian, I would have needed manual backlinks. In Notion, carefully maintained relations. With Sidebrain, the connections were automatic and contextual.

Month 3: My Process Changed

Old process: Have meeting → take notes → organize → tag → periodically review → search when needed.

New process: Have meeting → tell Sidebrain the key points → ask Sidebrain when needed.

Steps 2-4 of the old process are just gone. I calculated roughly 5-7 hours per week saved on note management.

Month 4: It Got Personal

Sidebrain knows I'm more creative in the morning. It knows my communication style. When I ask for help writing an email, it writes the way I write.

My note-taking apps never did this. They stored information but didn't know me.

Month 5: The Test

Preparing for a quarterly review, I asked Sidebrain to summarize the major themes from our conversations over three months. It gave me a comprehensive summary in under a minute — not just topics, but actual insights about narrative arcs and unresolved challenges.

This wasn't search. This was understanding.

What I Miss (And What I Don't)

Occasionally miss: The visual satisfaction of a beautiful Notion dashboard. Obsidian's graph view.

Absolutely don't miss: The guilt of an unorganized inbox. Spending Sundays "maintaining my system." Template creation, folder hierarchies, tag taxonomies.

Who Should Make This Switch

Works great if you: Spend more time organizing notes than using them. Want personalized AI. Are tired of system maintenance.

Stick with traditional notes if you: Genuinely enjoy organizing. Need team collaboration databases. Work in fields requiring auditable documentation.

The Bottom Line

The thing I actually wanted all along wasn't a better note-taking app — it was an AI that knows me. That's what Sidebrain is.

Try Sidebrain at sidebra.in — your notes app won't miss you as much as you think.