Choosing the right note-taking app feels like picking a second brain. Except your actual brain doesn’t come with a manual, either.
After spending months testing all three tools in real-world scenarios—from managing client projects to building a personal knowledge system—I can tell you: there’s no universal winner. But there’s definitely a right choice for you.
What Makes These Three Apps Different
Before diving into features, here’s the core difference: these apps aren’t just different tools—they’re different philosophies.
Notion treats knowledge like a database. Structure first, connections second.
Obsidian treats knowledge like a web. Your notes own the relationships, not the other way around.
Capacities treats knowledge like objects. Everything gets a type, and types define connections.
Let me break down each one so you can find your match.
Notion: The All-in-One Workspace
Notion launched as a productivity tool and basically became a platform. It’s the one your team probably uses—or at least has debated using.
What Actually Works
The database system remains unmatched. Need a CRM? Build it. Content calendar? Done. Project tracker with Kanban boards and timelines? Notion handles it without touching code.
I’ve watched teams go from scattered Google Docs to having one source of truth. That’s not trivial.
Where It Falls Apart
Speed. Notion loads slowly. Not dramatically slow, but noticeably slower than alternatives—especially with large workspaces. During client calls, I’ve watched the loading spinner become awkward.
The learning curve surprises people. “It’s just notes!” they think, then disappear into database relations for three hours.
Offline mode remains limited. You’re dependent on an internet connection. That’s fine until it isn’t.
Real World Example
A marketing agency I consulted used Notion to manage 40+ client accounts. Each client had a database with deliverables, timelines, and billing status. They loved it—until remote work introduced spotty connections. Then the complaints started.
Pricing in 2026
- Free: Unlimited pages, basic features (but 20MB upload limit)
- Plus: $10/month—unlimited uploads, full features
- Teams: $10/user/month
For solo use, the free tier covers most needs. Teams get expensive quickly.
Obsidian: The Markdown Powerhouse
Obsidian is the anti-cloud app. Every note lives on your device as a plain Markdown file. You own the data, full stop.
What Actually Works
Speed. Obsidian opens instantly—even with 5,000+ notes. I’ve tested this. The difference from Notion is not incremental; it’s perceptual.
The graph view. This is Obsidian’s secret weapon. Your notes aren’t in folders—they’re connected in a visual web. Click one note, see every related idea light up. This changes how you think about knowledge.
Plugins. Want a spaced repetition system? There’s a plugin. Digital gardening? Plugin. Task management? Plugin. The community is Active and growing.
Where It Falls Apart
Setup takes time. Unlike Notion’s plug-and-play, Obsidian requires configuring your workflow. Plugins need installing, themes need choosing, workflows need designing. This rewards the patient but frustrates the impatient.
Mobile experience is functional, not polished. It works—you can take notes on your phone. But it doesn’t feel as refined as Notion’s mobile app.
No native collaboration. Real-time editing together? Not happening. Obsidian is built for solo knowledge workers.
Real World Example
I built my entire writing workflow in Obsidian. Research notes connect to drafts, drafts connect to published pieces. The graph shows me which ideas I’ve developed and which are orphaned. But getting spouse to use it with me? No chance.
Pricing in 2026
- Personal: Free forever (local files)
- Sync: $5/month—cloud sync across devices
- Publish: $10/month—turn notes into websites
- Commercial license: $50/year for business use
You can use Obsidian completely free. The cost only appears if you want their sync service—or you can use iCloud/Dropbox for free alternatives. This makes Obsidian the cheapest option for solo users.
Capacities: The New Kid Thinking Differently
Capacities launched in 2022 and fundamentally asked: what if every note was an object with a type?
Instead of folders, you have “object types”—people, books, projects, ideas. Instead of linking everything manually, relationships emerge from the types themselves.
What Actually Works
The object-based system feels intuitive. Creating a “book” type means every book note automatically gets consistent properties—author, status, rating. No setup required.
Time to productivity is fast. Notion takes hours to understand. Obsidian takes days. Capacities clicked for me in 30 minutes.
The interface feels modern. Clean, fast, purpose-built. This matters when you’re using something daily.
Where It Falls Apart
It’s younger. Bugs exist. Features are still building. Some integrations you’d expect aren’t there yet.
Scaling concerns. Capacities handles several hundred notes beautifully. A few users report slowdown into thousands—but that’s still relatively early.
Community is smaller. Fewer plugins, fewer templates, fewer YouTube tutorials. You’re building more from scratch.
Real World Example
A writer friend uses Capacities for their research system. Each interview subject is a “person” type with notes, each quote is “quote” type linked to the person. She never manually links—the tool does it. For her workflow, this is revolutionary.
Pricing in 2026
- Free: Unlimited notes, 5GB media, limited features
- Pro: $10/month—AI assistant, unlimited storage, API access
The free tier is genuinely usable for individuals. But serious users hit the paywall.
Side-by-Side Comparison
| Feature | Notion | Obsidian | Capacities |
|---|---|---|---|
| Best For | Teams, databases | Personal PKM, writers | Individuals, object-thinking |
| Learning Curve | Moderate | Steep (setup required) | Easy |
| Collaboration | Excellent | None | Limited |
| Offline Mode | Limited | Full | Good |
| Free Tier | Generous | Fully free | Usable |
| Starting Price | $0 | $0 | $0 |
| Speed | Slow | Instant | Fast |
Pros and Cons
Notion
Pros:
- Best-in-class databases
- Excellent team collaboration
- Beautiful templates
- Active development
Cons:
- Slow performance
- Offline limitations
- Expensive for teams
- Learning curve for databases
Obsidian
Pros:
- You own your data completely
- Powerful graph visualization
- Largest plugin ecosystem
- Free forever (personal use)
Cons:
- Setup required
- No native collaboration
- Mobile less polished
- Git/technical knowledge helps
Capacities
Pros:
- Intuitive object system
- Fast time-to-productivity
- Modern interface
- AI features included
Cons:
- Still maturing
- Smaller community
- Some scaling reports
- Fewer integrations
Tips Based on Experience
- Don’t choose based on features alone. The best app is the one you’ll actually use daily. Notion’s power means nothing if you’re not opening it.
- Start with your pain point. What bothers you about your current system? Notion’s databases solve structure problems. Obsidian’s graph solves connection problems. Capacities solves organization problems.
- Consider your team. If you’re choosing for a team, Notion wins by default. The collaboration gap is massive.
- Export early, export often. Every tool claims portability—but test it. Export your data. Import it somewhere else. This matters more than you’d think.
- Accept you’ll switch. Most people cycle through tools. That’s fine. Your notes are probably more portable than you fear.
Frequently Asked Questions
Can I switch between these apps later?
Yes—but it requires effort. Notion exports to markdown and PDF. Obsidian IS markdown, so it imports everywhere. Capacities exports to markdown and CSV. The question is how much formatting you’ll lose. Test a small batch before committing 500 notes.
Which app is best for students?
Depends on how you work. Capacities offers the fastest start. Obsidian offers the best research tools (plugins for spaced repetition, annotation). Notion offers the best collaboration for study groups. I’d lean Capacities for individual study, Notion for group projects.
Do I really need a “second brain” app?
If you’re actively generating ideas, researching, or building knowledge—yes. The alternative is scattered documents losing context. But if you just need to jot notes and access them occasionally, your current system probably works fine. These tools optimize for knowledge workers, not casual note-takers.
My Verdict
After months of use across all three, here’s my honest take:
Notion wins if you work with teams. The collaboration is unmatched, and the database system is genuinely powerful. Accept the speed.
Obsidian wins if you care about ownership and connection. You’ll spend time setting it up—but you’ll never feel trapped. The graph view changes how you think.
Capacities wins if you want the future without the friction. The object-based system feels different in the best way. Watch this space.
My daily driver? Obsidian for personal knowledge, Notion for client work. Capacities stays installed for when it matures.
Final Rating
| App | Rating (out of 10) |
|---|---|
| Notion | 8.5/10 |
| Obsidian | 8.8/10 |
| Capacities | 7.8/10 |
Conclusion
The “best” note-taking app doesn’t exist. What exists is the app that matches how you think—and that you’ll actually open tomorrow.
Start with the free versions. Use each for two weeks. Notice which friction frustrates you and which workflow feels natural. That’s how you’ll know.
Your second brain deserves that much thought.
Sources:
- Medium – Capacities vs Obsidian vs Notion 2025 Feature Comparison
- ToolRadar – Best Note-Taking Apps 2026
- Productivity Stack – Capacities vs Notion 2026
- Breaking Cube – Notion vs Obsidian 18-Month Comparison
