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SUBSTRATEMODEL S-2 · SECOND-BRAIN UNIT
ModulesSpecsPower

SECOND-BRAIN APPARATUS · FULLY MECHANICAL MEMORY · SN 000001

Memory you
can operate.

Substrate files, wires and re-delivers your thoughts with the calm of a good machine. No feeds. No noise. Just switches that do exactly what they say.

Start free — throw the switchread the manual ↓

Recall fidelity 0%

Capture latency 0 ms ×10

Links per note 0 %ile

MODULE 01 — CAPTURE

Every thought, filed before it evaporates.

A global quick-capture takes dictation at typing speed. The sweep files each entry against your existing archive while you move on to the next idea.

STATUS AUTO-FILED IN 0.2 S

MODULE 02 — CONNECT

Wiring you don’t have to solder.

As notes accumulate, Substrate proposes connections by meaning, not memory. Set the range; the machine draws the lines both ways.

LINKED NOTES SURFACED ≈ 20

MODULE 03 — RECALL

Two operating modes. Zero guesswork.

Precise returns exactly what you asked for. Serendipity lets the needle wander into adjacent shelves and come back with something better than what you wanted.

MODE PRECISE

  • STORAGE LOCAL-FIRST
  • SYNC END-TO-END ENCRYPTED
  • EXPORT MARKDOWN, ONE CLICK
  • LOCK-IN NONE

Your second brain ships assembled.

main power · starts your free box

free while in beta · no credit card required

SUBSTRATE INSTRUMENTS © 2026CONCEPT 3 OF 5 — THE INSTRUMENTBARLOW CONDENSED & SPACE MONO