A new chapter for TheBrain

Your whole brain.Free, forever.

Unlimited thoughts. Unlimited brains. Every feature. Every platform. No expiration, no account required.

DownloadWindows · Mac · Linux · iOS · Android · Web
What's included in free

The full application.
No limits.

Everything you need to build, navigate, and grow a real knowledge graph on your own machine. Yours forever.

$0forever
Download

Personal and commercial use. No account required.

Everything included:

  • Unlimited thoughts, links, and brains
  • Unlimited notes, images, file attachments, and web links
  • All features — advanced views, API access, and more
  • Free sync for up to 500 private thoughts + 50 MB of attachments
  • Unlimited public Brains — sync and share for free
  • Limited AI assistance (small daily allowance)
When you're ready for more

Your brain, everywhere.
Thinking with you.

Sync across devices, take it on your phone, and bring Cerebro AI fully into your workflow. Optional, never required.

Save ~17%
Most Popular

Pro Service

Your brain, everywhere it goes.

$15/ month

Billed at $179 / year

Start with Pro

Includes:

  • Unlimited private sync
  • AI Integration
  • Web client access
  • Secure encrypted backup
  • 30 GB of online storage
  • One-on-one support

Max Service

More AI. More room to think.

$20/ month

Billed at $239 / year

Start with Max

Everything in Pro, plus:

  • Expanded AI usage
  • 100 GB of online storage
  • Priority support
  • Early access to new features

TeamBrain Service

One brain. Your whole team.

$25per person / month

Billed at $299 per person / year

Start with TeamBrain

Everything in Max, plus:

  • Multi-user editing & sync
  • Unlimited shared brains
  • Audit history and usage reporting
  • Admin dashboard
  • Centralized billing

Order by Phone

USA: 888-652-7529
International: +1-310-751-5000

8:00 AM – 5:00 PM Pacific. Online orders processed 24×7.

Questions about the change?

Email support@thebrain.com — we're here to help with migrations, refunds, and team transitions.

Already a customer?

Existing license & combo customers

12 months of free service, on us

Every existing Pro License or Pro Combo customer automatically receives 12 months of Pro Service free — sync, AI, and online backup.

No action required. Your 12 months of Pro Service has been automatically added to your account.

Bought a Pro License recently?

License-only purchases made in the last 60 days are eligible for a full refund. Or keep your license credit and we'll give you 18 months of Pro Service free automatically.

Request refund or credit

Questions, answered.

The short version of what's changing.

Is TheBrain really free?
Yes. The full app is free for everyone, with unlimited thoughts, every feature, and no expiration. We make money when you choose to add cloud sync, expanded AI, or collaboration on top.
What changed, and why?
We retired the one-time license. The software is now free for everyone, and our paid plans focus on the things with real ongoing cost: cloud services, and Cerebro AI.
I already bought a license. Am I losing anything?
No. Your license keeps working exactly as it always has, with every feature you paid for, forever. On top of that, you get 12 months of Pro service as a thank-you. Details in the section above.
What's Cerebro?
Cerebro is TheBrain's AI assistant. Unlike tools that just read your notes, Cerebro understands how your thoughts connect, surfacing the relationships across your knowledge graph that you'd otherwise miss. Free includes a daily taste. Pro and Max include full daily allowances.
Can I use TheBrain without ever paying?
Yes. The free version is genuinely complete on its own. Paid plans add things that depend on infrastructure we run for you, not on the capabilities of the app itself.
Do I need an account?
Not for the desktop app. Download and start using it without signing up. An account is only required if you choose to use our services.
v1v2v3v4v5v6v7v8