ExtraBrain

ExtraBrain is a free, local-first desktop AI interview and meeting copilot that provides live transcription, screen-aware context, and on-device AI powered by Gemma, available for Mac today.

What is ExtraBrain?

ExtraBrain is a free, local-first desktop AI copilot for live interviews and meetings. It captures live audio, transcript text, and screenshots from your Mac, and produces structured answers, prompts, notes, and session memory. It runs on macOS (Apple Silicon M1–M4 and Intel), with Windows and Linux planned. It is developed by ExtraBrain.

Key Features

• Live transcription and session memory — Uses local NVIDIA Parakeet for on-device transcription or optional Deepgram; captures live transcript and saves facts, answers, and follow-ups during the call.
• On-device AI powered by Gemma — AI runs locally on Mac using Gemma 4, with no cloud dependency; you can also connect your own providers (OpenAI, Anthropic, Claude, Codex, custom endpoints).
• Screen-aware context — Captures screenshots and selected context from the screen to inform AI responses, while staying hidden from screen sharing.
• Structured interview answers — Turns coding, system design, and behavioral prompts into clarifying questions, baselines, tradeoffs, and follow-up points.
• Post-session summaries — Generates summaries, action items, edge cases, unresolved risks, and review material after the session.
• Local-first privacy — All data stays on your Mac when using local transcription and on-device AI; you control what is sent to external providers.
• Compatibility — Works with Zoom, Google Meet, Microsoft Teams, Cisco Webex, Amazon Chime, Slack Huddles, Discord, and coding platforms HackerRank, CoderPad, Codility, CodeSignal.

Who is it for?

• Job candidates — Prepare and follow live coding interviews, system design rounds, and behavioral interviews with structured AI assistance.
• Meeting leads — Capture decisions, risks, owners, and follow-ups during meetings without taking notes manually.
• Students and researchers — Convert lectures and research calls into concepts, examples, and review questions.
• Founders and product managers — Extract customer pain points and quotes from customer research calls for roadmap planning.

What can you do with ExtraBrain?

• System design interviews: Turn requirements into components, tradeoffs, and follow-up questions using live transcript and screen context.
• Coding interviews with LeetCode or HackerRank: Capture the prompt, list edge cases, outline a clean baseline, and reason through complexity tradeoffs.
• Customer research: Highlight pain points and direct quotes from calls for use in notes or product planning.

Pricing

ExtraBrain is free to download and use. Pro starts at $6.99/month (regular $9.99), with yearly at $79/year and lifetime at $149. Enterprise plans are available by contacting the team.

FAQ

What does ExtraBrain do?

ExtraBrain provides live transcription and AI-powered support during interviews and meetings, all running locally on your Mac or with optional cloud providers. It does not join meetings as a bot.

Is ExtraBrain free?

Yes, the core app is free. Pro adds custom profiles, richer session history, and post-session summaries for a subscription.

Can I use ExtraBrain without sending data to the cloud?

Yes. With local Parakeet transcription and on-device Gemma AI, all processing stays on your Mac. You only send data to external providers if you choose them.

What platforms does ExtraBrain support?

Mac (Apple Silicon and Intel) is supported as of today. Windows and Linux are planned.