Notion vs Obsidian: The Best 'Second Brain' for Solopreneurs

Every solopreneur I know is either in the Notion camp or the Obsidian camp, and both camps talk about the other like they're using a spreadsheet instead of a brain. After a month of running my entire freelance business in each — same projects, same notes, same clients — here's my honest take: this argument is usually about the wrong thing.

Quick verdict

The real question isn't "which app has better features?" It's: "Do I need to share this with other people?"

• You share a lot (clients, contractors, partners) → Notion. Nothing else makes collaboration this effortless.
• Your knowledge is mostly yours → Obsidian. Plain files, local storage, backlinks. It will outlive every SaaS company.
• Can't decide → Obsidian for private, Notion for shared. It's what I actually run now.

What I liked about Obsidian

Your notes are files. This is the killer feature nobody mentions in feature lists: every note is a plain Markdown file in a folder you own. No lock-in, no export anxiety, no "we've moved this feature to the paid tier." If Obsidian disappeared tomorrow, my notes are still on my disk, readable by any text editor.

Backlinks change how you think. The bidirectional links — and the graph view — genuinely nudged me toward connecting ideas instead of filing them. After a few weeks I noticed myself writing notes for the future me to find, which is the whole point of a second brain.

It stays fast. Thousands of notes, years of history, and Obsidian still opens instantly. Notion's performance degrades at scale; Obsidian doesn't.

What I liked about Notion

Sharing is two seconds. Client wiki: create page, invite, done — with granular permissions, comments, and revision history. This is where Notion wins by a mile. In a service business, "send the client a link" beats every local-file workflow.

Databases are genuinely useful. Notion's tables (project trackers, client CRM, content calendar) are real databases with views, filters, and relations. Obsidian's table support is primitive — workable, but never elegant.

Templates and community. Notion's template ecosystem is vast. If you don't want to build your own systems, someone has already published the thing you need.

Where each one hurt

• Obsidian's sharing gap: sharing still requires plugins or the paid Sync/Publish add-on, and even then it's not a collaboration experience. I never wanted to send an Obsidian link to a client.
• Notion's lock-in feeling: my data lives in their cloud, and while export exists, the workspace feels rented. Notion also slowed down once my databases got big, and offline mode remains limited.

Pricing

Obsidian: free for personal use; Sync and Publish are paid add-ons. Notion: free for individuals, with paid plans from ~$10/user/month for teams and business features. Both are affordable; this decision is about data and collaboration, not cost.

The bottom line

I don't think this is a "pick a side" decision for solopreneurs. Keep your private brain in Obsidian — it's free, fast, and yours forever. Keep shared, collaborative spaces in Notion. One rule: never let a client-facing workspace live only in a local app, and never let your personal knowledge live only in someone else's cloud.

Disclosure: Obsidian and Notion links are affiliate links. If you buy through them, I may earn a commission at no extra cost to you.