SecondBrain was built in Italy by Federico Cesarini, the creator behind the app, with the idea of giving people one place where their thoughts and AI memory can stay connected. SecondBrain works as an AI-powered second brain that lets you simply speak, then turns your words into organized notes, calendar events, reminders, and follow-ups, while also giving AI assistants like ChatGPT, Claude, Gemini, Cursor, and Claude Code access to the same shared long-term memory through MCP. Users can also export their notes as Markdown files, making it easier to keep their data and use it with tools such as Obsidian, Notion, or VS Code. Its privacy-focused approach, voice-first experience, shared AI memory, and simple way of capturing ideas are some of its key attractions. The app is free to use with limits, while the Pro subscription increases those limits and unlocks shared AI memory and other Pro features.