Works on
iPhone & Laptop
Built for your whole life

Speak a thought. It's filed in 3 seconds.

No folders. No tagging. No "which app did I put that in." Just talk, and your second brain files it — then brings it back exactly when you need it.

See how it works →
SecondBrain
How it works

Capturing a thought should cost nothing.

No folders. No tags. No deciding where it goes. You talk — it does the rest.

01

Say it out loud

Hold the button and talk like you'd text a friend. From the car, the shower door, mid-walk — anywhere.

02

It works out what you meant

The filler comes out, a title goes on, and "next Friday" turns into a real date on a real calendar.

03

Filed, and it buzzes back

Right project, right date, right domain — with a confirmation on your phone about three seconds later.

Features

Everything you'd actually use. Nothing you wouldn't.

Opinionated on purpose. The part you touch every day stays fast.

🎙️

Voice capture

Speak from your phone or watch. Whisper transcribes, the AI cleans it up, and it lands filed in about three seconds.

🧭

Filed by meaning

Task, note, idea, journal entry, or a person — sorted by what you actually meant, not by keywords you remembered to use.

🛟

It never guesses

Below 85% confidence it refuses to file blind. It lands in a review inbox where one tap puts it right. Nothing is ever lost.

☀️

Daily briefing

One screen each morning: your Top 3, everything open in order, today's calendar, and anything that needs you.

👀

Projects that watch back

Every project tracks its last real action. Go quiet too long and it surfaces with a "9 days quiet" flag before it dies.

👥

People, photos & things

A personal CRM with birthdays, a private month-grouped gallery, and an inventory of what you own. Not just notes.

Stop trying to remember. Start thinking again.

Your whole life in one private brain — captured in seconds, and handed back right when it matters.

Get the app →

EARLY ACCESS · NO CARD REQUIRED · YOUR DATA STAYS YOURS

FAQ

Questions, answered.

How fast is capturing, really?
About three seconds from finishing your sentence to a filed record with a confirmation on your phone. You never open a folder, pick a project, or set a date by hand.
What happens when it isn't sure where something goes?
It refuses to guess. Anything under 85% confidence lands in a review inbox where one tap files it correctly — because a system that quietly mis-files things is worse than no system at all.
Is my data private?
Yes. Private database, private media storage — nothing shared, nothing public. The AI reads your captures only to file them. Your notes are never sold, shared, or used as training data.
Can I get my data out?
Always. Everything lives as plain, exportable records in a database you control — not locked inside a proprietary format. If you ever walk away, your brain walks with you.
What does it run on?
Your iPhone, installed straight to the home screen, plus the full dashboard in any laptop browser. One account, synced the second anything changes.
What does it cost to run?
About $6 a month on accounts you own — $5 hosting, a free database tier, and roughly a cent per thought filed. No per-seat pricing and no annual lock-in.

Need a hand? Every message gets read by a human — reach us any time at support@second-brain.app.