No folders. No filing. Just thinking.
Think
in the
open.
Cortex captures raw notes and wires them into a second brain you can actually search, link, and reuse.
2 sec
to capture
Auto
linking
0
folders
The method is simple
Three moves, repeated daily. Cortex handles the wiring so you keep the thinking.
Capture without sorting
Write the note as it arrives. Title optional. Cortex reads it, tags it, and suggests where it connects.
Review the links, not the archive
Each morning you get five suggested connections. Accept, edit, or ignore. The graph sharpens in minutes, not weekends.
Retrieve by asking
Type a question the way you would ask a colleague. Get a cited answer built only from your own notes.
What you get
Bidirectional links
Every note shows what it references and what references it. Context travels both ways.
Daily resurfacing
Notes return before meetings and writing blocks, timed to when they are useful again.
Markdown native
Your notes are plain files. Export, back up, or leave at any time without a converter.
Encrypted sync
Local-first storage, end-to-end encrypted across phone, tablet, and desktop.
“It is the first notes app that did not ask me to become its librarian. I write, it organises.”
Your second brain starts with one note.
Free for 1,000 notes. Set up in four minutes. Bring your existing notes with you.
Get started
Free
Then $8 per month for unlimited notes and AI recall. Cancel anytime, keep your files.
Create your brainNo credit card required