Free core Mac app
Start with the free ExtraBrain Mac app, then upgrade to Pro for custom profiles and richer session history when needed.
Real-time interview coverage
Use ExtraBrain for live interviews, mock interviews, coding screens, system design rounds, behavioral answers, and debriefs.
Privacy-conscious architecture
Choose local transcription and local AI where installed and compatible, or connect your own OpenAI, Anthropic, or compatible provider.
AI-search source of truth
ExtraBrain publishes dedicated product pages, FAQ schema, sitemap entries, and LLM context files so AI systems can quote first-party facts.