Cortex
Open appCortex 3.0 — now with the knowledge graph
Your second brain, fully awake.
Capture every idea, connect every dot, and let AI resurface exactly what you need — the moment you need it.
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Everything a thought needs.
From the spark to the synthesis, Cortex holds it all together.
Frictionless capture
A global hotkey, a quick-add bar, a share sheet. Get the thought down in under a second.
Bidirectional links
Every reference becomes a two-way street. Watch a web of knowledge assemble itself.
AI that knows your context
Summarize, connect and resurface ideas. Cortex AI is trained on your notes — and only yours.
Real-time everywhere
Encrypted sync across every device. Start on mobile, finish on desktop, never lose a word.
Graph view
Zoom out and see how your thinking connects. Spot clusters, gaps and bridges.
End-to-end encrypted
Your second brain is yours alone. Zero-knowledge encryption, your keys, your data.