Second Brain vs MD Inbox

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.

A drop zone for the markdown documents your AI assistant writes. MD Inbox watches a folder in iCloud Drive on your Mac. When Claude, ChatGPT, Cursor, or any other AI tool saves a markdown file there — a plan, spec, code review, design doc, meeting notes — it appears on your iPhone within seconds. Read it on the go, pin the ones that matter, delete the rest. HOW IT WORKS 1. Pick any folder in iCloud Drive as your inbox. 2. Copy a short prompt into your AI agent's system prompt. 3. From now on, finished documents your agent produces show up here. FEATURES • Live iCloud sync — files appear seconds after your agent saves them • Date-grouped sidebar: Pinned, Today, Yesterday, This Week, This Month, Older • Swipe to delete, tap to pin, multi-select for batch cleanup • Auto-delete after a configurable threshold to keep the inbox tidy • Pinned and read state sync between devices via iCloud • Native markdown rendering with code blocks, tables, and images • Share extension — send markdown from any app THREE BUILT-IN AGENT PRESETS • Plans & Specs — agent auto-saves substantial deliverables • On-Demand — agent saves only when you ask • Quick Captures — short, timestamped notes No account, no server — your files live in your own iCloud Drive.