A second brain, on paper terms
You don’t forget ideas. You misplace them.
Cortex is a note-taking application that remembers the way you do — by association, not by folder. Write things down once, and find them again by simply thinking out loud.
Notes are not storage. They are soil. A thought written down today cross-pollinates with one from last year, and something neither contained appears between them…
Fig. 1 — A note, with the connections Cortex found on its own
Capture without friction
A global hotkey opens a blank line anywhere. Type the thought, hit enter, and get back to what you were doing. Filing comes later — or never.
Connections form themselves
Cortex reads what you write and quietly links related notes together. Six months from now, the idea you forgot resurfaces exactly when it matters.
Ask your own mind
Search is a conversation. Ask “what did I think about pricing last spring?” and get an answer drawn from your notes, with every source cited.
“I stopped organizing my notes two years ago. I’ve never found things faster.”
Mara Ellison — Research lead, 11,000 notes
Begin with a single sentence.
Free for your first thousand notes. Then $8 a month, forever.
Open your notebook