A second brain that
thinks alongside you
Capture everything. Organize nothing. Cortex links your notes into a living graph and recalls the right idea at the right moment.
Everything a brain should do
Except forget, get tired, or need coffee.
Instant capture
⌘K from anywhere. Thought to note in under a second, synced before you blink.
Auto-linked graph
Every note becomes a node. Cortex draws the edges for you, surfacing relationships you didn’t know you had.
Semantic recall
Search by meaning, not keywords. “That article about habit loops” finds it, even if you never wrote those words.
Daily resurfacing
A short morning digest of old notes relevant to what you’re working on today. Your past self, on call.
Local-first & private
Notes live on your device, encrypted end-to-end when they sync. Your second brain is yours alone.
Works where you think
Mac, Windows, iOS, Android, browser, terminal. Offline included. Markdown under the hood.
Your brain, with a backup
Free up to 1,000 notes. Import from Notion, Obsidian, or Apple Notes in one click.
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