A system for second brains
Every note in its place. Every place connected.
Cortex gives scattered notes a clear structure and the links between them, so retrieval is exact.
Capture
2 sec
Connect
Auto
Retrieve
0.4 sec
Input
Text, voice, web, PDF
Structure
Links, not folders
Retrieval
Search plus cited AI
Storage
Local-first, Markdown
Three modules. One clear flow.
Each module does one job well. Together they turn a pile of notes into a brain you can query.
Write first, file never
Quick capture from any device. Cortex reads the note, extracts entities, and proposes links you can accept in one tap.
Links build the structure
Bidirectional links and typed relationships replace folder trees. The graph view shows clusters, bridges, and gaps.
Answers with receipts
Full-text search plus a cited answer layer. Every AI answer points to the exact notes it drew from.
What is included
Core
- Unlimited capture on free tier to 1,000 notes
- Bidirectional links and graph view
- Full-text search across everything
Recall
- Daily resurfacing before your work blocks
- Cited AI answers from your notes only
- Meeting briefs built from linked notes
Trust
- Local-first storage, Markdown export
- End-to-end encrypted sync
- Works offline, syncs when you return
“The structure is visible. I can see why a note is where it is, and I can get to any answer in two clicks.”
Give your notes a system that lasts
Start free, import in minutes, and keep every file as portable Markdown from day one.
Get Cortex freeFree
1,000 notes
$8/mo
Pro unlimited
4 min
to import