Free your mind
to think.

Capture everything via WhatsApp.
Your Second Brain handles the rest.

Get Started → See it in action
SB
Second Brain
online
Call dentist Thursday 3pm
✅ Saved: Call Dentist — Thu 3PM
Idea — team subscription tier
💡 Idea captured: Team subscription

How it works

Capture

Capture

anything, anywhere

Organize

Organize

automatically

Act

Act

with clarity

Everything you need. Nothing you don't.

Voice

Voice Transcription

Send voice notes. AI transcribes perfectly.

Classification

Smart Classification

AI sorts into Tasks, Projects, Ideas, People.

Briefing

Morning Briefing

Wake up knowing what matters today.

Reminders

Smart Reminders

Context-aware nudges. Never miss follow-ups.

Reviews

Weekly Reviews

Sunday insights reveal patterns you'd miss.

Timezone

Works Everywhere

Any timezone. Messages arrive when needed.

"It meets me where I am. I capture 3x more ideas now because there's zero friction."
— Early User

Start today

Everything you capture. Nothing you forget.

$19 /month

Billed in USD. Your bank converts automatically.

  • Unlimited captures (text, voice, photos)
  • AI-powered voice transcription
  • Smart classification into Tasks, Ideas, People, Projects
  • Daily briefings & smart reminders
  • Weekly reviews
  • Personal dashboard with task management
  • Secure private workspace with Google sign-in

Questions

Send anything to your dedicated WhatsApp number — a task, idea, contact, or project note. Our AI instantly classifies it and places it in the right category. Open your personal dashboard anytime to review, manage, and act on everything you've captured.
Capturing works entirely through WhatsApp — no app needed. You also get a personal dashboard to view and manage everything. It opens in your browser and can be saved to your home screen so it works just like a native app.
Text messages, voice notes, and photos. The AI sorts everything into four categories: Tasks, Ideas, People, and Projects. You can also create and edit entries directly in your dashboard.
It happens occasionally. You can quickly delete the misclassified item and recreate it in the correct tab — takes about 10 seconds. Your original WhatsApp message is always preserved. Tip: being specific in your messages helps the AI classify more accurately.
Securely in your own private workspace on Google's cloud infrastructure. Only you can access your data. We never share it with third parties, and backups are maintained for 30 days.
Completely. Each user gets their own private workspace with secure sign-in. No one else can see your tasks, ideas, contacts, or projects — not even other Second Brain users.
Yes. One click, no questions asked. Your captured data remains accessible even after cancellation.
Claude by Anthropic for intelligent classification and organization. OpenAI Whisper for voice note transcription. Your messages are processed securely and never used to train AI models.