Your Second Brain, Powered by AI
Capture thoughts, find connections, and take action with AI that truly understands your ideas and helps you get things done.
No credit card required
Everything you need to build your second brain
Powerful features designed to help you capture, organize, and unlock the full potential of your knowledge.
Brain Chat
Talk to your notes and take action. Ask questions, create tasks, and manage your knowledge - all through natural conversation.
Voice Notes
Speak your mind. Record voice memos on the go and AI transcribes them instantly so you never lose a thought.
Semantic Search
Find by meaning, not keywords. Our AI understands what you mean and surfaces relevant notes even with different wording.
AI Actions
Say "remind me to call John tomorrow" and watch it happen. Create tasks, mark items complete, and manage your notes with natural commands.
Capture Everything
Rich text, voice recordings, images, and files in one place.
Think Deeper
AI helps you see patterns and connections across all your notes.
Stay Organized
Tags, tasks, and smart search keep everything findable.
Daily Briefs
Get AI-generated summaries of what matters most.
Always in Control
Every AI action is undoable. Made a mistake? One tap to reverse it.
Calendar Sync
Connect Google Calendar to link meeting notes with events.
Ready to build your second brain?
Join others using Brainstream to capture, connect, and create.
No credit card required