Second Brain - AI Memory

The AI-powered journal that remembers everything. Capture thoughts by voice or text — AI organizes, connects, and recalls your memories so nothing is ever lost.

Second Brain models how your mind actually works. Every memory is classified into three layers — instant thoughts, short-term plans, and long-term knowledge — then linked, reflected on, and surfaced exactly when you need it.

CAPTURE IN SECONDS

Type a thought or press and hold to speak. AI automatically classifies each memory, extracts tags, and generates a summary. No folders. No manual sorting. Just capture and move on.

EXPLORE YOUR MEMORIES

Ask anything: "What did I decide about the project?" or "What did Sarah say last week?" AI searches across all your memories using meaning — not just keywords — and weaves relevant ones into a clear, contextualized answer.

PEOPLE MEMORY

Create cards for the people in your life. Track what they said, shared experiences, meeting notes, and to-dos. Never forget a birthday, a promise, or a conversation again.

WEEKLY REFLECTIONS

Every week, AI reviews your memories, finds recurring themes, spots growth areas, and offers a concrete suggestion — like a thoughtful friend reading your journal.

DISCOVER CONNECTIONS

AI builds a knowledge graph across your memories, revealing patterns and links you never noticed. Watch your ideas form constellations over time.

VOICE CAPTURE

Press and hold to speak. Real-time transcription fills your memory instantly. Switch between English and Chinese with one tap. Perfect for capturing thoughts on the go.

KEY FEATURES

- Three-layer memory system inspired by cognitive science
- AI classification, tagging, and summarization
- Semantic search — find memories by meaning
- Memory strength visualization with Ebbinghaus forgetting curve
- People cards with relationship tracking
- Daily, weekly, and monthly AI reflections
- Voice input with real-time transcription
- Theme clusters that reveal your thinking patterns
- Memory connection graph
- iCloud sync across devices
- Full data export (JSON + Markdown)
- Works offline — core features need no internet
- Privacy-first: your data stays on your device

SUBSCRIPTION

Second Brain is free to use with daily limits. Upgrade to Pro for:

- 20 memory explorations per day
- Deep weekly and monthly reflection reports
- Memory connection graph
- Theme discovery clusters
- Unlimited captures, people cards, and OCR
- iCloud sync and data export

Free 3-day trial available. Cancel anytime.

PRIVACY

Your memories are stored locally on your device. AI features use the Anthropic Claude API for processing — no other third party ever sees your data. Optional iCloud sync uses your personal Apple account. We never collect, store, or sell your information.

Terms of Use: https://smartkiitos.com/secondbrain/terms/
Privacy Policy: https://smartkiitos.com/secondbrain/privacy/