A second brain, kept properly
The art of
remembering.
Cortex is a considered home for your thinking — equal parts notebook, archive, and quiet intelligence. Every note finds its place; nothing is ever truly lost.
Our philosophy
A mind unrecorded is a mind half-lived. We build tools for the other half.
Capture is sacred
A thought interrupted is a thought lost. Cortex meets you the instant an idea arrives — no setup, no friction, no decisions.
Connection is intelligence
A note alone is a fact. A note linked to ten others is understanding. Cortex builds the connections quietly, in the background, always.
Recall should feel like memory
Not search — recollection. Ask a question the way you'd ask a trusted colleague, and Cortex answers the way your memory should.
The method
Three movements, repeated daily.
Write
Begin anywhere — a margin, a meeting, a 2am thought.
Weave
Cortex threads each note into the larger tapestry of your knowledge.
Return
Months later, find exactly the thread you need, intact.
The atlas
Watch your knowledge take shape.
Step back from any note to see the constellation it belongs to — every connection drawn by hand, by Cortex, in the background, while you simply wrote.
- Visual map of every connection
- Traceable, explainable links
- Exportable to your own archive
“Cortex is the first tool that has made me trust my own archive again.”
“It reads less like software and more like a well-kept commonplace book.”
Investment
Pricing, plainly stated
Atelier
For a daily practice.
$14 /mo
- Everything in Foundation
- Unlimited devices
- Considered AI assistance
- Complete history
Studio
For shared work.
$24 /mo
- Everything in Atelier
- Shared collections
- Guest access
- Dedicated concierge