Capture thoughts by text or voice. AI classifies, connects, and recalls them for you — so your best ideas never slip away.
Capture a thought and AI instantly classifies it — identifying the memory type, extracting tags, and generating a summary. All on-device, zero API cost.
Press and hold to record. Real-time transcription fills your capture field with live waveform feedback. Supports multiple languages.
Ask questions about your memories. Hybrid recall finds related memories through people, text, and semantic similarity — then AI synthesizes insights across them.
AI reviews your memories on a schedule — daily processing, weekly theme analysis, and monthly deep reflections that reveal growth patterns in your thinking.
See how your ideas connect. A force-directed graph visualizes relationships between memories based on semantic similarity and shared tags.
Create cards for the people in your life. AI detects names in your memories and links them automatically — so you remember everything about everyone.
Quick fragments, daily observations, things that pop into your head. AI processes these daily — upgrading the important ones and archiving the rest.
Goals, deadlines, project notes, and plans for the near future. These stay active for the week and feed into your weekly reflections.
Important experiences, values, life philosophies, and key relationships. These are your permanent memories — strengthened over time through reflection.
Second Brain is built with privacy at its core. Your data lives on your device — not on our servers, not in a database we control.
All memories stored on-device with SwiftData. Your data never leaves your phone unless you choose iCloud sync.
Zero data collected via our servers. No analytics, no tracking, no user profiles built from your memories.
Core features work without internet. On-device AI classification runs locally with zero API cost.
Pro users can opt into iCloud sync via CloudKit for cross-device access. Fully encrypted, fully optional.
Second Brain is coming soon to the App Store. Your AI memory companion that grows smarter the more you use it.