Second Brain - Voice Notes

Second Brain is a companion voice recorder for the Second Brain macOS app. Capture voice notes on the go and sync them to your Mac for transcription and AI analysis.

The app automatically detects speech and silence (Voice Activity Detection), splits recordings into chunks, and transfers them to your Mac over the local network — no cloud involved.

Features:

• Voice recording with automatic Voice Activity Detection
• Background recording — keeps working when the app is minimized
• Live Activity — recording progress on Lock Screen and Dynamic Island
• Seamless Mac sync via Bonjour (P2P, no cloud)
• Geolocation tagging for recordings
• Fully offline — all data stays on your device

Pair your iPhone with the Second Brain macOS app to unlock transcription, knowledge extraction, and AI-powered search across all your voice notes.