Desktop app

Download Second Brain Studio

The full Studio as a native desktop app. It drives Claude Code or Codex locally — the model is rented and swappable, the brain it reads is yours and never leaves your machine. Same engine as the browser Studio, with real local file access.

All downloads & release notes → · also as .deb for Debian/Ubuntu on the releases page.

Before you start

Second Brain Studio uses a local agent to build your vault from your data exports. Install the second-brain-link skill and have Claude Code or Codex available on your machine. Then download your data exports — any of the 25 supported sources (LinkedIn, Google, Instagram, X, GitHub, Spotify… or company-side Slack, Notion, Salesforce…) — drop them into the Studio's Sources panel, and Reseed to build your brain. (A paid cloud option is coming soon.)

First launch (unsigned build)

The current builds aren't code-signed yet, so your OS will warn on first open:

• macOS: right-click the app ▸ Open (just once), or run xattr -dr com.apple.quarantine "/Applications/Second Brain Studio.app".
• Windows: on the SmartScreen prompt, click More info ▸ Run anyway.

Second Brain Mobile — iOS & Android

The native mobile app builds your twin entirely on-device — import your exports on the phone, explore the graph, talk to your brain. No account, no cloud. Download on the App Store (iPhone) · Get it on Google Play (Android) — built on-device; store listings pending signing. More in the mobile app docs.

Prefer the browser? Open Second Brain Studio in your browser →